There are more than 577 recognised neurological conditions, disorders and syndromes which affect the brain, spinal cord, nerves and muscles.
Mae mwy na 577 o gyflyrau, anhwylderau a syndromau niwrolegol cydnabyddedig sy’n effeithio ar yr ymennydd, madruddyn y cefn, y nerfau a’r cyhyrau.