1 The scientific name for caffeine is 1,3,7-trimethylxanthine. 2  Caffeine is considered to be the most commonly used psychoactive drug in the world. 3  Coffee, soda, and tea are the most common sources of caffeine in the American diet.  Discontinuation of regular caffeine use may produce withdrawal symptoms.
For most patients, post concussion symptoms go away within a few days to several weeks after the original injury occurs.[In others, symptoms may remain for three to six months.In a small percentage of patients, symptoms may persist for years or may be permanent.
1 The signs and symptoms of concussion often last for 7 to 10 days. 2  Sometimes they last much longer, even many weeks or months. 3  The most important treatment for a concussion is rest. 4  No child should go back to a sport until they have been cleared to do so by a doctor.