Suudu

Suudu (Tamil, pronounced [cuːd̪u]) is a culture-specific syndrome of painful urination and pelvic "heat" familiar in South India, especially in the Tamil culture. It occurs in males and females. It is popularly attributed to an increase in the "inner heat" of the body often due to dehydration. It is usually treated by the following.

The problem has also been known to exist in other parts of South India and the methods of treatment are also similar.

...
Wikipedia