A majority of individuals across the globe complain about sudden headaches during bath. The bath-related headache (BRH) is a primary headache which was initially reported by middle, old-aged or post-menopausal Asian women. But now it outspreads throughout the vast demographic areas.

Aliza Kumpinsky and Stephanie J. Nahas, two researchers reviewed the recently updated data on bath-related headache. The mechanism behind this headache is still not understood, but it is known to be related with reversible cerebral vasoconstriction syndrome (RCVS) and vasospasm. RCVS is a condition in which the vessels supply blood to the brain suddenly constricted or tighten, and this results in severe and sudden headaches also known as "thunderclap" headaches.

Many of controlled trials assessed Nimodipine may help to treat patients with or without vasospasms.

However, controlled trials examining the use of nimodipine and other agents might be useful in further understanding and treatment of this phenomenon.