What are the typical symptoms of giant cell arteritis?

Symptoms of Giant Cell Arteritis

Giant cell arteritis presents most commonly with new-onset persistent headache (often temporal), jaw claudication, visual disturbances, and constitutional symptoms—and these symptoms in anyone over 50 years old with elevated inflammatory markers should trigger immediate specialist referral and treatment to prevent permanent blindness. 1

Key Clinical Symptoms

Cranial Manifestations

The most characteristic symptoms include:

• New-onset persistent localized headache, typically in the temporal area (most common symptom) 1
• Jaw and/or tongue claudication (pain with chewing) - highly specific finding with positive likelihood ratio of 4.90 2
• Acute visual symptoms including:
  • Amaurosis fugax (transient vision loss)
  • Acute visual loss
  • Diplopia (double vision)
• Scalp tenderness 1

Constitutional Symptoms

Non-specific systemic features occur frequently:

• Weight loss (>2 kg) 1
• Low-grade fever 1, 3
• Fatigue 1, 4
• Night sweats 1
• Malaise 3

Polymyalgia Rheumatica Symptoms

Approximately 40-60% of GCA patients experience concurrent polymyalgic symptoms including shoulder and hip girdle pain and stiffness 1, 4

Large Vessel Involvement

When extracranial arteries are affected:

• Limb claudication (positive likelihood ratio 6.01) 1, 2
• Reduced or absent pulses in upper extremities 1

Physical Examination Findings

Critical signs to assess include:

• Temporal artery abnormalities: tenderness, thickening, or reduced pulsation (positive likelihood ratio 4.70 for thickening) 1, 2
• Bruits, particularly in the axilla 1
• Blood pressure asymmetry between arms 1
• Ophthalmologic findings: anterior ischemic optic neuropathy, cranial nerve palsies, retinal artery occlusion 1

Laboratory Markers

Elevated inflammatory markers are present in >95% of cases at diagnosis 4:

• ESR >100 mm/h (positive likelihood ratio 3.11) 2
• CRP ≥2.5 mg/dL 2
• Platelet count >400 × 10³/μL (positive likelihood ratio 3.75) 2

Critical caveat: Normal ESR/CRP should raise suspicion for alternative diagnosis, as their absence has negative likelihood ratios of 0.18 and 0.38 respectively 2

Atypical Presentations

Less common but important manifestations include:

• Respiratory symptoms: chronic harsh nonproductive cough, sore throat, hoarseness (occurs in <10% of cases) 3
• Tongue symptoms: pain, ulceration, necrosis from ischemia 5
• Neurologic: stroke, seizures (non-hypertensive) 1
• Gastrointestinal: mesenteric ischemia causing abdominal pain 5

Important pitfall: 18% of biopsy-proven GCA cases present with only atypical features and experience significant treatment delays 6. Atypical presentations are particularly dangerous because patients seek care earlier but receive treatment later due to diagnostic uncertainty 6.

Age Consideration

GCA occurs almost exclusively in patients over 50 years of age 3, 4. Absence of age >70 years has a negative likelihood ratio of 0.48 for the diagnosis 2.

Clinical Decision-Making

No single symptom or sign is sufficient alone to confirm or exclude GCA 2. The diagnosis requires integration of clinical features, inflammatory markers, and confirmatory testing (temporal artery ultrasound, biopsy, or large vessel imaging) 1. However, patients with typical symptoms plus elevated CRP/ESR who present with acute visual disturbance must be treated immediately before diagnostic confirmation, as delaying treatment is the strongest risk factor for permanent blindness 1.