Original URL: http://www.theregister.co.uk/2006/07/28/the_odd_body_hangover/

Why doesn't a hangover occur the night before?

Morning after blues

By Stephen Juan

Posted in Science, 28th July 2006 12:16 GMT

Also in this week's column:

Why doesn't a hangover occur the night before?

Asked by Anna Ro of Newtown, New South Wales, Australia

This type of headache is technically called a "delayed alcohol-induced headache" or DAI headache.

According to the Mayo Clinic in Rochester, Minnesota, symptoms of a DAI headache include "a pulsating pain that's felt in front and on both sides of your head. It may worsen when you move around".

A DAI headache from excessive drinking is due to the following:

Alcohol ingestion can alter the normal daily rhythm of various body functions. After the assault upon the body from too much alcohol occurs, it takes time for the body to respond to the stress and eventually get back to normal. Thus a hangover is not immediate.

And just because you may have a headache that's DAI doesn’t mean you should risk a DUI.

Stephen Juan, Ph.D. is an anthropologist at the University of Sydney. Email your Odd Body questions to s.juan@edfac.usyd.edu.au