Your right. Link:
http://en.wikipedia.org/wiki/Concussion
Treatment
There is no specific treatment for concussion. Usually concussion symptoms go away without any treatment.[66] The main care consists of observation of the patient to monitor for worsening condition.[67] Rest is a traditional treatment,[68] and patients are advised to get plenty of sleep at night plus rest during the day.[57] Healthcare providers recommend a gradual return to normal activities at a pace that does not cause symptoms to worsen.[57] Proper nutrition is also recommended while the patient is recovering.[67] Medications may be prescribed to treat symptoms such as sleep problems.[55] For the headaches that frequently occur after concussion, patients may take analgesics such as acetaminophen[66] or ibuprophen, but are discouraged from taking aspirin because it inhibits blood clotting[51] and so can lead to bleeding within the skull if a blood vessel is weakened or ruptured. Patients are advised not to drink alcohol or take drugs that have not been approved by a doctor, as they could impede healing.[57]
Healthcare providers recommend that those suffering from concussion return for further medical care and evaluation 24 to 72 hours after the concussive event if the symptoms worsen. Athletes, especially intercollegiate or professional athletes, are typically followed closely by team trainers during this period. But those injured in accidents may not have access to this level of healthcare and may be sent home with no medical person monitoring them unless the situation gets worse. Patients may be released from the hospital to the care of a trusted person with orders to return if they display worsening symptoms[23] or those which might indicate an emergent condition, like unconsciousness or altered mental status; convulsions; severe, persistent headache; extremity weakness; vomiting; or new bleeding or deafness in either or both ears.[69] Doctors recommend that the patient be observed repeatedly for the first 24 hours after concussion; however it is not known whether it is necessary to wake patients up every few hours.[23]