Alarm signs in trigeminal neuralgia

Signos de alarma en neuralgia del trigémino

Classic trigeminal neuralgia (TN) is most common after 50 years of age, predominantly unilateral within the distribution of the V2 and V3 branches of the trigeminal nerve. Carbamazepine is the most effective medication, although not all patients respond to it. In consideration physicians should arrange a brain magnetic resonance imaging study when facing TN patients with atypical presentation and alarm signs, as secondary causes must be ruled out. We present a case of epidermoid cyst with secondary TN which presented with “red flag” signs. Image studies were therefore mandatory.

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