Differential Diagnosis of Temporal Region Pain

Life‑Threatening Condition

Giant cell arteritis (temporal arteritis) must be excluded in any patient > 50 years presenting with temporal region pain, because delayed diagnosis can cause irreversible blindness. The condition is strongly associated with elevated erythrocyte sedimentation rate (ESR) and C‑reactive protein (CRP). If GCA is suspected, high‑dose corticosteroids (≥ 40 mg prednisone daily) should be started within 2 weeks to prevent vision loss. [1][2]

TMD affects roughly 5‑12 % of the general population, with peak incidence between 20 and 40 years of age. [3][4]5
Typical presentation includes pain localized to the jaw, face, and temporal region, frequently accompanied by headaches and earache. 6
Joint noises (clicking, popping, crepitus) and reduced mandibular function are common clinical findings. 6
Examination should assess the masticatory muscles for tenderness, trigger points, and hypertrophy. 3
Psychological factors such as depression, catastrophizing, and other comorbidities increase the risk of chronic TMD. [3][5]
TMD often co‑exists with fibromyalgia, chronic back pain, and persistent headaches. [3][5]

Acute maxillary sinusitis can refer pain to the temporal region, especially when the infection involves the upper premolars or molars. [3][4]
Etiologies include viral, bacterial, or dental‑related infections (e.g., post‑extraction complications). [3][4]
Imaging may demonstrate a foreign body within the sinus antrum. 3

Characterized by paroxysmal, sharp, electric‑shock‑like pain lasting seconds to minutes, most often involving the second (V2) and third (V3) divisions of the trigeminal nerve. 2
Typical triggers are light touch, facial washing, cold wind, eating, or tooth brushing. 2
A pain‑free refractory period separates individual attacks. 2
Carbamazepine is the first‑line pharmacologic therapy. 7
Magnetic resonance imaging (MRI) is required to exclude secondary causes such as tumors or demyelinating disease. 7

SUNCT/SUNA present with brief attacks (seconds to minutes) that may occur up to 200 times per day and lack a refractory period. [1][2]
Prominent autonomic features accompany each attack, including intense tearing, conjunctival injection, rhinorrhea, nasal congestion, facial flushing, and ear fullness. [1][2]8
Lamotrigine is the medication of choice for these disorders. 8

Pain may be confined to the ear or posterior tongue and mimics the sharp, shooting quality of trigeminal neuralgia but originates from the glossopharyngeal nerve. [9][1]
Rarely, episodes are associated with syncope due to proximity to the vagus nerve. [9][1]

In patients > 50 years, jaw claudication is the most reliable clinical clue for giant cell arteritis; immediate ESR/CRP testing is mandatory. 2
Do not misclassify trigeminal neuralgia as SUNCT/SUNA; the presence of multiple prominent autonomic signs indicates SUNCT/SUNA and necessitates different treatment. [1][8]
Before confirming a primary neuralgia diagnosis, obtain MRI with and without contrast to rule out secondary etiologies such as tumors or demyelinating disease. [7][8]