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.
Post-traumatic headaches can develop after any type of head injury. These headaches feel like migraines or tension-type headaches, and usually last up to 6 to 12 months after your injury occurs. They can become chronic. Triptans, sumatriptan (Imitrex), beta-blockers, and amitriptyline are often prescribed to control the pain from these headaches.