Hi, Your father is currently having a blood clot in the brain due to high blood pressure (otherwise called stroke ). He is not able to move or speak because this blood clot has damaged that part of brain responsible to move and speak. Usually, strokes are transitory, they can be reversed by time when blood clot is being removed medically (drugs) or surgically (operation) depending on the current health status of the patient (decided by his doctor - cardiologist, angiologist). Other times, strokes are permanent, i.e. the problems they cause remain for the entire life as blood clot cannot be reversed. Now, nobody here virtually can really tell you the right diagnosis, and treatment for your father as many medical data are needed. I would suggest to talk to his cardiologist or angiologist and ask what is the current status of your father and what actions are needed to help him go out of that status. Hope it helped!