The brain is full of electrical activity. Brain cells communicate by sending electrical signals called action potentials to other brain cells. TCDS, a type of non-invasive brain stimulation, introduces a small electrical current into the brain to increase the likelihood of action potentials occurring in a certain area. There is strong research evidence to support the use of tDCS in the treatment for depression, chronic pain (fibromyalgia), and migraines. Research is currently underway to investigate its use in addictions and trauma treatment, various neuropsychiatric conditions, and cognitive enhancement. I have successfully used tDCS to treat depression, addictions, impulsivity, and migraine headaches, with no significant adverse effects.