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Cardiovascular

Raynaud's Phenomenon & Vasculitis

Raynaud's High-yield Verified · Sep 2026

Raynaud's phenomenon is an exaggerated, reversible narrowing of the small arteries of the fingers and toes in response to cold or stress; vasculitis is inflammation of the blood-vessel wall, of which giant cell arteritis is the most common form in older adults.

For Raynaud's, the nurse teaches warmth, no smoking and no vasoconstricting drugs, and treats a fingertip ulcer as urgent. For giant cell arteritis, any visual change is an emergency, steroids are not delayed for the biopsy, and the months of steroids that follow need bone, glucose and infection care.

What’s going wrong in the body

The normal physiology, where it fails, and why the body’s compensation backfires.

01 Raynaud's: a cold reflex that goes too far

[RAY] What it is. "Raynaud’s phenomenon is a condition that causes the blood vessels in the extremities to narrow, restricting blood flow. The episodes or “attacks” usually affect the fingers and toes." Normally cold makes skin vessels constrict to save core heat; "In people with Raynaud’s phenomenon, blood vessels in the hands and feet react to cold or stress, narrowing quickly and staying constricted for a long period" (NIAMS).

Mechanism. "In response to cold temperatures, the sympathetic nervous system releases vasoconstrictor neuropeptides and norepinephrine, causing arterial smooth muscle constriction and decreased blood flow to the skin." In primary Raynaud's the response "is associated with increased alpha-2 adrenergic sensitivity in the digital and cutaneous vessels." "Emotional stress releases signaling molecules that cause blood vessels to narrow, which is why anxiety can trigger an attack."

Primary vs secondary. Primary Raynaud's "has no known cause. It is the more common form of the condition," usually starting before age 30. "The secondary form is less common but typically more serious than the primary form due to damage that occurs to the blood vessels" — most often a connective tissue disease "such as scleroderma, systemic lupus erythematosus, Sjögren syndrome, or antiphospholipid syndrome," where "Endothelial dysfunction in digital and cutaneous vessels usually compromises function, leading to vasoconstriction and subsequent tissue ischemia."

Cold or stress triggers sympathetic vasoconstriction of the digital arteries: white, then blue, then red on rewarming. In secondary Raynaud's, damaged vessels can stay ischemic long enough to ulcerate.

02 Giant cell arteritis: inflamed arteries starve the eye and jaw

[GCA] What it is. "Giant cell arteritis (GCA) is a chronic inflammatory vasculitis that predominantly affects large- and medium-sized arteries in individuals older than 50. This complex disorder commonly involves the cranial branches of the carotid arteries." "The mean age of onset is 75," and women are affected more often than men.

Why the eye and the jaw. "Intimal hyperplasia and lumen occlusion contribute to ischemic complications." Visual complications "usually occur due to anterior ischemic optic neuropathy caused by vasculitis involving the ophthalmic artery or the posterior ciliary arteries," and "Jaw claudication occurs due to decreased blood supply to jaw muscles." "The granulomatous nature of GCA contributes to the loss of vascular smooth muscle cells and elastic fibers, potentially leading to aneurysm formation and vascular remodeling."

[PMR] Its companion. "Polymyalgia rheumatica and giant cell arteritis are closely linked inflammatory disorders that almost always occur in people older than age 50." NIAMS: "About 10 percent of people with polymyalgia rheumatica have giant cell arteritis, and about 50 percent of those with giant call arteritis have polymyalgia rheumatica"; StatPearls gives 16% to 21% and 40% to 60%. PMR causes "symmetrical pain and stiffness in and around the shoulders, neck, and hip girdle."

Granulomatous inflammation narrows cranial arteries: ischemia of the optic nerve causes vision loss, of the jaw muscles claudication, of the temporal artery headache; large-vessel disease affects the aorta.

03 Vasculitis in general: the vessel wall is the target

[VASC] Definition. "Vasculitis encompasses a heterogeneous group of diseases characterized by inflammation of blood vessels, resulting in subsequent end-organ tissue damage" (StatPearls). "Vasculitis is called primary when the cause cannot be identified. It is called secondary when something else causes it to occur" (NHLBI).

What the inflamed wall does. "The inflamed lining (walls) of blood vessels may restrict or completely block blood flow, or it may cause formation of blood clots. In rare cases an inflamed vessel wall may balloon, forming an aneurysm with thin walls at risk of tearing." General symptoms include fever, weight loss, tiredness, pain and rash, and "With treatment, vasculitis can go into remission, which is a period of time when the disease is not active."

By vessel size. "Granulomatosis with polyangiitis usually affects the nose and throat area, lungs, and kidneys." "Microscopic polyangiitis affects small to medium-sized blood vessels, often including those in the kidneys and lungs." "Takayasu arteritis most often affects the aorta and its branches." "Small-vessel vasculitis often produces life-threatening complications, eg, alveolar hemorrhage, renal failure, and intestinal ischemia." "The most significant barrier to diagnosing vasculitis is putting the diagnosis on the differential in the first place."

Whatever the type, the inflamed vessel wall narrows, clots or balloons; small-vessel forms can cause life-threatening lung, kidney and bowel complications.

Causes & risk factors

Modifiable factors are teaching targets — the patient can act on them.

[RAY] Primary — usually before age 30, often starting in the teens; family history; more women than men (NIAMS) [RAY] Secondary — connective tissue disease — scleroderma, lupus, Sjögren's, rheumatoid arthritis, inflammatory myositis, antiphospholipid syndrome [RAY] Drugs — "Drugs, such as antimigraine medications, interferon alpha and beta, cyclosporine, and nonselective beta blockers, can cause secondary Raynaud phenomenon"; decongestants with phenylephrine or pseudoephedrine and stimulants such as methylphenidate can bring on attacks modifiable [RAY] Vibrating tools, cold or chemical exposure at work; prior frostbite — hand-arm vibration syndrome modifiable [RAY] Smoking and vaping — "Nicotine in cigarettes and some vaping solutions can cause blood vessels to narrow, increasing the chance of an attack" modifiable [RAY] Older than 60 — "obstructive vascular disease is a frequent cause of Raynaud phenomenon" [GCA][PMR] Age over 50 — "typically in people in their late 60s and in their 70s"; women more than men (NIAMS)

Signs & symptoms

Each finding tied to the mechanism that produces it — and the triage it calls for.

[RAY] White, then blue, then red fingers or toes with cold or stress Expected
Why: NIAMS: skin "turns pale or white due to lack of blood flow"; then "turns blue and feels cold and numb, as the blood that is left in the tissue loses its oxygen"; "Finally, as you warm up and circulation returns, the area turns red and may swell, tingle, burn, or throb." "An attack may last a few minutes or a few hours."
[RAY] Thumb involved, onset after 30, asymmetric attacks, or joint pain, rash or other systemic symptoms Hold & notify
Why: Clues to secondary Raynaud's: "The thumb is typically spared. If the thumb is affected, secondary Raynaud phenomenon should be suspected." Rheumatology consultation "should be obtained for patients with secondary Raynaud phenomenon."
[RAY] Painful fingertip sore; darkening or black tissue Hold & notify
Why: "In severe Raynaud phenomenon attacks, typically associated with secondary Raynaud phenomenon, digital ulceration of the tips of the fingers and toes may develop because of prolonged vasoconstriction and subsequent tissue ischemia. In severe cases, gangrene or loss of digits may occur." Patients "should be instructed to seek medical help as soon as possible to prevent gangrene."
[GCA] New headache (often temporal) and scalp tenderness in a person over 50 Hold & notify
Why: "Headaches and scalp tenderness. These are the most common symptoms." "Clinicians should suspect GCA in any patient older than 50 who presents with a new headache or change in the typical features of their preexisting headache."
[GCA] Jaw pain with chewing (jaw claudication) Hold & notify
Why: "Jaw claudication, occurring in nearly 50% of patients with GCA, manifests as pain or fatigue in the mandible and occasionally the tongue, triggered by chewing, and typically subsides upon cessation of chewing."
[GCA] Any visual change — double vision, a curtain over one eye, sudden painless vision loss Report immediately
Why: NIAMS: "It is important to see a health care provider right away if you develop visual symptoms, because if left untreated, they can lead to permanent vision loss within hours or days." StatPearls: transient visual loss is "an early warning sign of permanent visual impairment, necessitating urgent attention." "Diplopia is a highly specific indicator of the disease."
[GCA] Low-grade fever, weakness, weight loss; arm pain with use; unequal arm pulses or blood pressures
Why: Constitutional inflammation and large-artery (aortic branch) involvement. "GCA accounts for more than 15% of all fevers of unknown origin in patients aged 65 or older."
[PMR] Shoulder, neck and hip stiffness, worst in the morning Expected
Why: The stiffness is "usually worse upon waking in the morning or after resting, and usually last an hour or more"; it is typical "to have difficulty raising your arms above the shoulders" (NIAMS). "Persistent high fever is uncommon in PMR and should alert suspicion of GCA."
[VASC] Coughing blood, falling urine output, severe abdominal pain in a person with vasculitis late Report immediately
Why: "Small-vessel vasculitis often produces life-threatening complications, eg, alveolar hemorrhage, renal failure, and intestinal ischemia."

Diagnostics

Test In this disorder Normal
[RAY] Clinical history of a typical attack NIAMS: "There is no single test to diagnose Raynaud’s phenomenon. Doctors usually diagnose it based on symptoms, in particular, on a description of a typical attack upon exposure to cold." Episodic color change triggered by cold or stress —
[RAY] Nailfold capillaroscopy "Abnormal nailfold microscopy is associated with an increased likelihood of developing a CTD, particularly scleroderma." Normal in primary; abnormal capillaries suggest secondary Raynaud's —
[RAY] ANA and TSH NIAMS: "One of the more common of these tests is the antinuclear antibody (ANA) test and a thyroid stimulating hormone (TSH) test." Positive ANA raises suspicion of a connective tissue disease —
[GCA][PMR] ESR and CRP NIAMS: "These tests are measures of inflammation, but they are not specific for polymyalgia rheumatica or giant cell arteritis." StatPearls: "A normal CRP carries a high negative predictive value," but "biopsy-confirmed cases may show a normal ESR." Usually markedly raised —
[GCA] Temporal artery biopsy or color Doppler ultrasound "Patients suspected of having GCA should undergo a biopsy or color Doppler ultrasound (CDUS) of the temporal artery." "The diagnostic sensitivity of temporal artery biopsy is approximately 77%." Steroids are not delayed for either test — the ultrasound is done "upon suspecting GCA or within 1 week of beginning glucocorticoid therapy." Granulomatous arteritis on biopsy; halo sign on ultrasound StatPearls —
[VASC] Urinalysis, renal function, chest imaging, ANCA GPA and MPA can cause "hematuria, and proteinuria from a necrotizing glomerulonephritis," and lower-airway disease with "dyspnea, cough, and hemoptysis." Hematuria and proteinuria from glomerulonephritis in ANCA vasculitis —

Complications

Warning: [GCA] Permanent vision loss Report immediately
"Permanent vision loss, most often resulting from anterior ischemic optic neuropathy, is painless and sudden, and it can be unilateral, bilateral, partial, or complete." Untreated visual symptoms "can lead to permanent vision loss within hours or days."
"Timely initiation of glucocorticoids is crucial to prevent blindness" (StatPearls). Clinicians "begin glucocorticoid therapy as soon as the diagnosis of GCA is suspected" (StatPearls, citing ACR 2021). Even so, vision "loss can progress despite glucocorticoid therapy in nearly 10% of patients" (StatPearls).
Warning: [RAY] Digital ulcers and gangrene Hold & notify
"In rare cases, an extended episode (lasting days) of a lack of oxygen to tissues can lead to gangrene (cellular death and decay of body tissues)."
NIAMS: the person "may need to be admitted to the hospital for a few days for imaging studies and intravenous medications to rapidly improve blood flow and to treat infection. Wound care services may be needed." "When digital tissue ischemia is present and symptoms are severe, intravenous prostaglandin infusion is used."
Warning: [GCA] Aortic aneurysm, dissection, stroke and heart attack
Large-artery disease can cause "bulging of the artery (aneurysms)"; initial symptoms may include "back or chest pain due to aortitis, or aortic dissection."
"Patients with GCA are 4 times more likely to have a myocardial infarction and 2.5 times more likely to experience a cerebrovascular accident compared to age-matched controls." See Aortic Aneurysm & Dissection and Stroke.
Caution: [GCA][PMR] Long-term corticosteroid effects Hold & notify
Therapy lasts "approximately 2 to 3 years, during which adverse effects may affect nearly 90% of individuals. Weight gain, cataract formation, osteopenia, osteoporosis, fragility fractures, glucose intolerance or diabetes, and adrenal insufficiency are among the commonly observed complications."
"Slow tapering of corticosteroids is necessary to mitigate the risk of adrenal insufficiency." "Monitoring for glucose intolerance through blood glucose checks before initiating therapy and every 3 months is crucial." Infection and hypertension are also listed.
Caution: [GCA][PMR] Relapse
"Relapses occur in nearly 50% of patients affected by GCA." NIAMS: "it is common for symptoms to recur after decreasing or stopping therapy."

Medications for this condition

Why each class is prescribed here — every card links to its full pharmacology page.

Calcium Channel Blockers First-line
Cardiovascular · amlodipine

[RAY] First-line drug when warmth and avoidance are not enough. "Long-acting dihydropyridine calcium channel blockers (DHP CCBs) are the first-line pharmacologic treatment for Raynaud phenomenon. Amlodipine and nifedipine are typically preferred" (StatPearls). This is off-label: "there are no medications approved by the U.S. Food and Drug Administration for Raynaud’s phenomenon" (NIAMS). Watch blood pressure; expect "flushing, peripheral edema, dizziness, and headache"; avoid grapefruit; "Abrupt discontinuance of the drug after prolonged use may lead to rebound hypertension or angina."
Corticosteroids First-line
Endocrine · prednisone

[GCA][PMR] The mainstay. "Corticosteroids. These anti-inflammatory medications are a mainstay of treatment for both disorders" — low to moderate doses for PMR and higher doses for GCA, then a gradual taper; "You may remain on a maintenance dose for a year or possibly longer" (NIAMS). In GCA, "Guidelines state that all patients with GCA warrant high-dose glucocorticoids as the initial treatment" (StatPearls), and "Patients with diplopia should also receive IV steroids" (StatPearls, citing ACR and BSR).
Immunosuppressants / Biologics / DMARDs
Immune / Anti-infective · methotrexate

[GCA] Steroid-sparing; [VASC] induction and maintenance. "The ACR recommends tocilizumab, an IL-6 inhibitor antagonist, and high-dose glucocorticoids for patients requiring a corticosteroid-sparing agent" (StatPearls, citing ACR 2021); because it blocks IL-6, "the normalization of CRP and ESR levels can make disease monitoring challenging." For severe GPA and MPA, "rituximab is preferred over cyclophosphamide for induction of remission, administered alongside high-dose glucocorticoids" (StatPearls, citing ACR 2021).
Beta-Blockers
Cardiovascular · metoprolol

[RAY] A cause, not a treatment. "Drugs, such as antimigraine medications, interferon alpha and beta, cyclosporine, and nonselective beta blockers, can cause secondary Raynaud phenomenon"; NIAMS adds that blood-pressure medicines may make Raynaud's worse. Review the medication list.

Beyond medications

  • [RAY] Keep the whole body warm — "Often, it is not enough to keep your hands and feet warm; you need to keep your “core body” (chest, abdomen, and head) warm, too." Wear gloves for cold or frozen items and bring a layer into air-conditioned places (NIAMS).
  • [RAY] End an attack with warmth, not heat — "place your hands or feet in a warm place, such as under warm (not hot) water or under a heating pad. You can also warm your hands by whirling your arms in a windmill pattern or placing them under your armpits."
  • [RAY] Stop smoking and vaping; manage stress; avoid decongestants, diet pills and stimulants that narrow vessels — "Some medications can bring on attacks, so talk to your doctor about those you take and before starting any new ones."
  • [RAY] Skin care — "Keep your hands clean and dry, use a moisturizer regularly, and treat any cracks or sores promptly."
  • [RAY] Severe or ulcerating disease — low-dose aspirin for secondary Raynaud's with a history of ischemic ulcers, intravenous prostaglandin for severe digital ischemia, wound care, and sometimes sympathectomy "to destroy the nerves that trigger blood vessel narrowing" (StatPearls; NIAMS). Further drug options after a CCB include a PDE-5 inhibitor or topical nitrates (StatPearls). No doses on this page.
  • [GCA] Low-dose aspirin — "Low-dose aspirin reduces the incidence of vision loss and stroke associated with GCA and is an adjuvant therapy if no contraindications exist" (StatPearls); its use with carotid or vertebral artery involvement is attributed to StatPearls, citing ACR 2021.
  • [GCA][PMR] Bone and metabolic protection on steroids — "To protect your bones, make sure you get enough calcium and vitamin D and do weight-bearing exercises, such as walking" (NIAMS); bone density monitoring and bisphosphonates when indicated (StatPearls). "To avoid weight gain and lower the risk of diabetes and high blood pressure, eat a healthy balanced diet and exercise regularly."

Nursing considerations

The RN-specific layer — each action paired with the reason it matters.

Assessment
[RAY] Ask when attacks started, which digits are involved (including the thumb), whether they are symmetric, and about sores, joint pain or rash; inspect the fingertips.
Why: StatPearls: "the age of onset, location of affected areas, symmetry, presence of digital ulcerations, and severity of attacks should be assessed" to rule out secondary Raynaud's.
[RAY] Review all medicines, over-the-counter decongestants and stimulants included.
Why: Nonselective beta-blockers, antimigraine drugs, decongestants and stimulants can cause or worsen attacks; "Pharmacists should ensure patients are not receiving medications that can cause vasoconstriction."
[GCA] In any patient over 50 with a new headache, ask about jaw pain with chewing, scalp tenderness, and any visual change, and check both arms' pulses and blood pressures.
Why: These are the features that should make clinicians suspect GCA; large-vessel disease can cause "asymmetric pulses and blood pressure readings in the upper extremities."
On long-term steroids, monitor blood glucose, blood pressure, weight, infection signs and bone health.
Why: Adverse effects "may affect nearly 90% of individuals"; glucose is checked "before initiating therapy and every 3 months."
Interventions
[GCA] Escalate at once for any visual symptom in a patient with suspected or known GCA, and expect high-dose steroids to start without waiting for the biopsy.
Why: Untreated visual symptoms "can lead to permanent vision loss within hours or days"; clinicians "begin glucocorticoid therapy as soon as the diagnosis of GCA is suspected" (StatPearls, citing ACR 2021).
[RAY] Report a new fingertip ulcer or darkening tissue promptly and arrange wound care.
Why: Patients "should be instructed to seek medical help as soon as possible to prevent gangrene"; "A wound care nurse should be consulted."
[RAY] During an attack, rewarm with warm (not hot) water or body heat.
Why: NIAMS specifies "warm (not hot) water."
Never stop long-term corticosteroids abruptly; taper exactly as ordered.
Why: "Slow tapering of corticosteroids is necessary to mitigate the risk of adrenal insufficiency."
Patient and family teaching
[GCA] Treat any double vision or vision loss — even brief — as an emergency and get care immediately.
Why: Transient visual loss is "an early warning sign of permanent visual impairment, necessitating urgent attention."
[RAY] Dress warmly (core included), carry gloves, avoid sudden cold, quit smoking and vaping, and manage stress.
Why: "For most people with Raynaud’s phenomenon, avoiding getting cold prevents attacks and keeps symptoms under control."
[RAY] On a calcium channel blocker: rise slowly, report ankle swelling or headaches, avoid grapefruit, and do not stop it suddenly.
Why: Adverse effects include "peripheral edema, palpitations, reflex tachycardia, dizziness, and headache"; abrupt stopping may cause "rebound hypertension or angina."
[GCA][PMR] On steroids: take calcium and vitamin D, walk or do other weight-bearing exercise, eat a balanced diet, and report side effects.
Why: "Corticosteroids can cause side effects, even at low doses, and it is important to let your doctor know if you experience any of them."
[GCA][PMR] Know that symptoms may return as the dose is lowered, and report them.
Why: "Relapses occur in nearly 50% of patients affected by GCA."

How a real nurse thinks

The clinical-judgment loop, worked for a typical presentation — reasoning, not reference.

  1. 1
    Recognize cues

    Age over 50, new temporal headache, scalp tenderness, jaw claudication, transient monocular vision loss, low-grade fever, arm BP asymmetry, in a patient with PMR — the classic GCA picture.

  2. 2
    Analyze cues

    The resolved curtain is amaurosis: transient visual loss is "an early warning sign of permanent visual impairment." Untreated, visual symptoms "can lead to permanent vision loss within hours or days."

  3. 3
    Prioritize

    Protecting the other eye and this eye is the emergency. Steroids should start now, on suspicion — not after a biopsy.

  4. 4
    Generate solutions

    Notify the provider immediately; anticipate high-dose glucocorticoids today, and temporal artery biopsy or ultrasound within the recommended window.

  5. 5
    Take action

    SBAR: 72-year-old with PMR; 10 days new right temporal headache, scalp tenderness, jaw claudication; 5-minute right monocular vision loss this morning; T 37.9; right–left arm SBP difference 18; tender temporal artery; ESR/CRP high. Concern for GCA with visual symptoms — requesting immediate evaluation and steroids.

  6. 6
    Evaluate

    Reassess vision and headache after treatment starts; teach her to report any new visual change at once, and begin the steroid teaching — bone protection, glucose checks, no abrupt stopping.

Scenario — you’re the nurse

Work each question before revealing the answer. Rationales explain the wrong options too.

Primary care clinic · 0830

A 72-year-old woman with polymyalgia rheumatica for 6 months, on low-dose prednisone, calls in and is seen the same morning.

History — 10 days of a new right-sided headache; her scalp hurts when she brushes her hair; her jaw aches after chewing for a minute and eases when she stops
This morning — a gray curtain over her right eye for about 5 minutes, now resolved
Vital signs — T 37.9 °C; BP right arm 146/84, left arm 128/76; HR 88
Exam — tender, firm right temporal artery
Labs from last week — ESR and CRP markedly elevated
Q1 Multiple choice
A 72-year-old with a new temporal headache and jaw pain on chewing reports a brief curtain over one eye this morning. What is the priority?
  1. A. Schedule a temporal artery biopsy and start steroids once it confirms the diagnosis
  2. B. Notify the provider immediately — high-dose steroids should start on suspicion
  3. C. Give acetaminophen and reassess the headache tomorrow
  4. D. Refer to an optometrist for a routine eye exam
Reveal answer & rationale
Answer: B
Visual symptoms "can lead to permanent vision loss within hours or days," and clinicians "begin glucocorticoid therapy as soon as the diagnosis of GCA is suspected" (B). Waiting for the biopsy (A) or treating symptomatically (C, D) risks blindness.
Q2 Select all that apply
Which instructions are correct for a patient with primary Raynaud's phenomenon? Select all that apply.
  1. A. Keep the chest, abdomen and head warm, not only the hands and feet
  2. B. End an attack by holding the hands under warm, not hot, water
  3. C. Take a pseudoephedrine decongestant for a cold
  4. D. Stop smoking and vaping
  5. E. Wear gloves when handling frozen food
Reveal answer & rationale
Answer: A, B, D, E
NIAMS: keep the "core body" warm (A); "warm (not hot) water" (B); nicotine narrows blood vessels (D); gloves for cold or frozen items (E). Decongestants containing pseudoephedrine can bring on attacks (C).
Q3 Multiple choice
Which finding in a patient with Raynaud's phenomenon most suggests the secondary form?
  1. A. Onset at age 16
  2. B. Symmetric attacks sparing the thumbs
  3. C. Attacks involving the thumb, with a fingertip ulcer
  4. D. Attacks relieved within minutes by warming
Reveal answer & rationale
Answer: C
"If the thumb is affected, secondary Raynaud phenomenon should be suspected," and digital ulceration is "typically associated with secondary Raynaud phenomenon" (C). Teenage onset, symmetric thumb-sparing attacks and quick relief fit primary Raynaud's (A, B, D).
Q4 Multiple choice
Which drug class is typically first-line for Raynaud's phenomenon that does not respond to conservative measures?
  1. A. Nonselective beta-blockers
  2. B. Long-acting dihydropyridine calcium channel blockers
  3. C. Decongestants
  4. D. Stimulants
Reveal answer & rationale
Answer: B
StatPearls: "Long-acting dihydropyridine calcium channel blockers (DHP CCBs) are the first-line pharmacologic treatment for Raynaud phenomenon" (B). Nonselective beta-blockers can cause Raynaud's (A), and decongestants and stimulants bring on attacks (C, D).
Q5 Multiple choice
A patient taking prednisone for giant cell arteritis for several months feels well and wants to stop it today. What is the best response?
  1. A. Stopping is fine once symptoms have resolved
  2. B. The dose must be tapered slowly as ordered because stopping suddenly risks adrenal insufficiency
  3. C. Switch to an over-the-counter anti-inflammatory instead
  4. D. Stop it and restart only if vision changes
Reveal answer & rationale
Answer: B
"Slow tapering of corticosteroids is necessary to mitigate the risk of adrenal insufficiency" (B). Relapse is common, and vision loss is not a safe trigger for restarting (A, D); only a slow, ordered taper is safe, so swapping drugs on one's own is not (C).

Common questions

What causes raynaud's phenomenon & vasculitis?
Common causes and risk factors include [ray] primary — usually before age 30, often starting in the teens; family history; more women than men (niams), [ray] secondary — connective tissue disease — scleroderma, lupus, sjögren's, rheumatoid arthritis, inflammatory myositis, antiphospholipid syndrome, [ray] drugs — "drugs, such as antimigraine medications, interferon alpha and beta, cyclosporine, and nonselective beta blockers, can cause secondary raynaud phenomenon"; decongestants with phenylephrine or pseudoephedrine and stimulants such as methylphenidate can bring on attacks, [ray] vibrating tools, cold or chemical exposure at work; prior frostbite — hand-arm vibration syndrome, [ray] smoking and vaping — "nicotine in cigarettes and some vaping solutions can cause blood vessels to narrow, increasing the chance of an attack", and others.
Is there an FDA-approved drug for Raynaud's?
No. NIAMS: "there are no medications approved by the U.S. Food and Drug Administration for Raynaud’s phenomenon," but drugs approved for other conditions are used — long-acting dihydropyridine calcium channel blockers first (StatPearls).
Why are steroids started before the temporal artery biopsy?
Because of "the risk of permanent vision loss, clinicians begin glucocorticoid therapy as soon as the diagnosis of GCA is suspected" (StatPearls, citing ACR 2021). The biopsy is still done, within about 2 weeks of starting steroids (same source), and the ultrasound within 1 week (StatPearls).
Does a normal ESR rule out giant cell arteritis?
No. ESR and CRP are usually high, but "biopsy-confirmed cases may show a normal ESR." A normal CRP makes GCA less likely, but the clinical picture drives urgent treatment.
How are polymyalgia rheumatica and giant cell arteritis related?
They are "closely linked inflammatory disorders that almost always occur in people older than age 50." Every patient with PMR should be checked for GCA features, and a high fever or poor response to treatment in PMR should raise suspicion of GCA.
Is primary Raynaud's dangerous?
Usually not — "especially those with the primary form of Raynaud’s phenomenon, the symptoms are mild and not highly troublesome," and spontaneous remission may occur. The secondary form "is less common but typically more serious."

Sources

Reviewed by Hae Suk Lee, RN

Educational summary for nursing students. Scenarios are fictional teaching cases. Always verify against current guidelines and your institution's protocols before acting in practice. Not medical advice.

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