Coma Directory

A coma is a prolonged state of unconsciousness during which the comatose patient is unresponsive to the environment. A coma is caused by a brain injury due to increased pressure, swelling, brain hemorhage, loss of oxygen, a traumatic blow, infection like meningitis, drug overdose or, in people with diabetes, high blood sugar levels. Prompt medical attention is vital to treat potentially reversible conditions. Follow the links below to find WebMD's comprehensive coverage of coma, what it is, how it is caused, treated, and much more.