We describe woman with hot bath-related headache, who reported severe exploding headache provoked by soaking in a hot bath. Neurologic examination, routine laboratory tests, EEG and brain CT showed no abnormality. She haㅇ stopped soaking in a hot bath, trevafoer has never had a headache. No medications were needed. Hot bath related headache is a benign headache withont structural lesion. Korean Journal of Headache 1(1):86-87, 2000