A neurological disorder is a http://www.answers.com/topic/disease of the http://www.answers.com/topic/human-body-1's http://www.answers.com/topic/nervous-system....
Any pathology which affects the central nervous system (CNS) or peripheral nervous system. (Examples include brain tumors, cerebral palsy, multiple sclerosis, Parkinson's disease, Alzheimer's...
I understand that both are from Sheffield, England. Even when they aren´t relatives, both families had some relationship and Joe take Jarvis in his arms when Jarvis was a kid.
If Joe Cocker had cerebral palsy it would show. Whether it is minor, or severe people would know if something was different. That is the last thing people with cp want, is to be treated differently...