After a stroke, a person may feel sudden or extreme emotions. Sadness and depression are common. These feelings may be due to damage in the brain. Or they may be a response to the person's awareness of what has happened.
One common effect of stroke is lability. This problem makes people less able to control their emotions. Lability may cause a sudden mood shift that is out of context with what is going on. A person may suddenly cry or laugh.
A person may feel depressed after having a stroke. This may be due to brain damage. Changes in body image and grieving for lost skills, such as speech or freedom of movement, may also cause depression.