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.
Around 90% of athletes who sustain a concussion get better within 7 to 14 days. Studies on high school athletes show that it takes them a little longer, around 7 to 21 days. Athletes who have risk factors like previous migraine or a previous history of concussion may take a little longer to recover. In such cases, they need to be monitored carefully to make sure that they are on the right track.