Therapeutics, Treatment and care to combat disease or alleviate pain or injury. Its tools include drugs, surgery, radiation therapy, mechanical devices, diet, and psychiatry. Treatment may be active, to cure a disease (requiring no further treatment after recovery), treat it long-term, or heal a wound; symptomatic, to relieve symptoms until the immune system heals the body; supportive, to keep body functions going until the disease clears; or palliative, to minimize discomfort for patients with no chance of recovery.