A rare complication of MEASLES due to infection of the brain with the measles virus. It develops 2–18 years after the onset of the measles, and is characterised by mental deterioration leading on to CONVULSIONS, COMA and death. The annual incidence in Britain is about one per million of the childhood population. The risk of its developing is 5–25 times greater after measles than after measles vaccination (see MMR VACCINE; IMMUNISATION).
(SSPE) a rare and late complication of *measles characterized by a slow progressive neurological deterioration that is usually fatal. It can occur four to ten years after the initial infection.
Having characteristics of both acute and chronic. This is the state in a disease when most of the aches and pains have subsided and you are likely to overdo things and not completely recover. The chest cold that lingers for weeks as a stubborn cough is a subacute condition, as is the tendonitis that lingers because you won’t stop playing tennis long enough to completely heal.... subacute
Health Encyclopedia