Thank you for choosing health care magic. Brain stroke
results in paralysis( weakness of body part) based on the part of the brain involved. It could be wither ischemic( occlusion of blood vessel) or hemorrhagic9tear of blood vessel). Your friends father should visit a neurophysician. He will recommend proper treatment. Usually patients recover from stroke over time. Recovery is inversely proportional to severity of the stroke. Early physiotherapy
is highly recommended apart from medical therapy.