We found high prevalence of osmophobia among migraine patients, and this complaint is useful in making the diagnosis of migraine in primary care. Osmophobia is associated with migraine and more years of headache history.

Osmophobia in migraine patients is associated with significant anxiety symptoms, length of headache history, and phonophobia.

HIV-positive patients had a high frequency of headaches, which had a great impact on patients' lives. The pattern most often found was migraine. There was no correlation between CD4 counts and the severity of headaches.