In this disease the person usually find it hard to sit and to balance his body. Thus he confronts many issues and problems in walking or sitting. This is mainly due to brain injury that might have occurred in childhood or due to some other reasons. It affects the movements of the muscles. Doctors have used this term to refer to some of the digit of neurological disorder which appears in infancy and early childhood as well as permanently affects the body movements as well as muscles coordination but are not progressive. In different words, they do not get deteriorated over time.