Clinical Features and Psychiatric Comorbidity of Epicrania Fugax

BACKGROUND: Epicrania fugax (EF) is a rare newly described primary headache characterized by paroxysms of unilateral pain radiating across one hemicranium. AIM: We aimed to describe 10 new cases of EF and assess the psychiatric comorbidity. MATERIALS AND METHODS: Cases of EF were identified from patients attending the neurology outpatient department of a tertiary level referral and teaching hospital by the first author during a period extending from January 1, 2015 to April 31, 2017. Case ascertainment was done as per ICHD 3 beta criteria from among patients presenting with complaints of headache after detailed history and clinical examination. Clinical and demographic features were noted and patients were subjected to Mini Neuropsychiatric Interview to screen for psychiatric comorbidity followed by Becks Anxiety/Depression Inventory. RESULTS: A total of 10 subjects were obtained during the study period, 4 males, and 6 females. Mean age of subjects was 45.3 years (standard deviation-10). Seventy percent had anteroposterior, and 30% had posteroanterior radiation of pain. The most common character of pain was stabbing (50%) followed by electrical (40%) and pressing (10%). None of the subjects had autonomic symptoms or focal symptoms in the scalp while 30% subjects had hyperesthesia in the affected area of the scalp. Six subjects (60%) patients had episodic course while 40% had chronic course. Sixty percent had comorbid anxiety while one (10%) had comorbid depression. A significant relation was obtained between duration of disease and occurrence of anxiety as well as Becks Anxiety Inventory scores while there was no correlation with attack duration. There was also a nonsignificant correlation between visual analog score and occurrence of anxiety symptoms. CONCLUSIONS: Our study conclusively proves the existence of EF as a rare, distinct primary headache syndrome in our study population. It has a significant psychiatric comorbidity consisting of 60% of generalized anxiety disorder, 10% of panic attacks, and 10% of depression.