A stroke is when part of the brain suddenly doesn't get oxygen. This can happen if a blood vessel to the brain gets blocked or if there is bleeding in your brain. A stroke causes some of the cells in your brain to die. This can cause multiple problems.
Stroke often causes paralysis of one or more of the muscles of your arm and leg on one side of your body. This is called hemiplegia. Or you may have a less severe condition called hemiparesis. This is weakness on one side of your body. One or more of these muscles might feel tight instead of weak. In general, stroke might increase or decrease the normal muscle tone in these muscles. A stroke can also lead to numbness or less feeling on the affected side of the body.
This lack of feeling can lead to more problems, because it may make you less aware that a part of your body is out of alignment. This can lead to chronic shoulder pain or partial shoulder dislocation. If you are unable to move a part of your body, this can lead to pressure sores.