IV. Disability caused due to:

A) Chronic neurological conditions, such as—

15. "Multiple sclerosis" means an inflammatory, nervous system disease in which the myelin sheaths around the axons of nerve cells of the brain and spinal cord aredam- aged, leading to demyelination and affecting the ability of nerve cells in the brain and spinal cord to communicate with each other;
16. "Parkinson’s disease" means a progressive disease of the nervous system marked by tremor, muscular rigidity, and slow, imprecise movement, chiefly affecting middle-aged and elderly people associated with degeneration of the basal ganglia of the brain and a deficiency of the neurotransmitter dopamine.

B) Blood disorder—

17. "Hemophilia" means an inheritable disease, usually affecting only male but trans- mitted by women to their male children, characterized by loss or impairment of the normal clotting ability of blood so that a minor wound may result in fatal bleeding;
18. "Thalassemia" means a group of inherited disorders characterized by reduced or ab- sent amounts of hemoglobin.
19. "Sickle cell disease" means a hemolytic disorder characterized by chronic anemia, painful events, and various complications due to associated tissue and organ damage; "hemolytic" refers to the destruction of the cell membrane of red blood cells resulting in the release of hemoglobin.