According to published scientific studies, the success rate for neurofeedback for various disorders is 75 to 80 percent. In order to correctly state effectiveness rates, more neurofeedback research is required. Neurofeedback has been shown to be effective in treating a variety of neurological and mental health conditions including ADHD (attention deficit hyperactivity disorder), chronic pain, autism, epilepsy, depression, and anxiety.   In general, the success rate for neurofeedback depends on the type of problem being treated, its chronicity, severity, and the length of time for which it is needed. For example, people who suffer from migraine headaches often report that their frequency and severity of attacks is significantly reduced with neurofeedback. In cases of chronic pain, some patients have reported reduced or eliminated need for medication after successful treatment with neurofeedback.   Neurofeedback has also produced successful results when treating substance use disorders problems such as alcoholism. Studies have shown that alcoholics who receive neurofeedback experience decreased blood flow to certain areas of the brain that normally respond to alcohol consumption, which indicates that neurofeedback may be an effective tool in reducing cravings for alcohol and other types of addiction.