Your headache may be due to several causes such as migraine, tension-type headache, sinus-related headache, dehydration, or fluctuations in blood pressure. Taking a head bath itself usually does not cause a serious problem, although cold water or sudden temperature changes may trigger headache in some people. Gas and loose stools may occur along with migraine in some individuals or may be due to a separate gastrointestinal infection/food intolerance.
Next Steps
*Check your blood pressure, especially during the headache.
* Maintain good hydration and regular meals.
* Avoid very cold water/head baths if they consistently trigger the headache.
* Note whether the headache is associated with nausea, vomiting, light/sound sensitivity, visual symptoms, fever, or nasal blockage.
* If headaches are recurrent or worsening, a clinical examination is advisable to determine whether further evaluation is needed.