Swimming-related headaches have a few different causes with similar symptoms. One common cause is swimmer's ear, which can lead to headaches due to a bacterial infection that follows from water ...
Behavioral management of migraine headache triggers: learning to cope with triggers. Current Pain and Headache Reports, Jun;14(3):221-7. doi: 10.1007/s11916-010-0112-z Martin, P.R. et al. (2014).