one of the after effects of a stroke is
"Behaviour changes, which may include being slower to react than before the stroke, excessive caution, disorganisation, difficulties adjusting to change and becoming confused or irritated."
also
"Mood changes, including mood swings, irritability and laughing or crying, even when you don't feel particularly happy or sad. Depression is extremely common, with symptoms such as loss of appetite, insomnia, crying, low self-esteem and anxiety."
"Cognitive difficulties, including problems caused by damage to areas of the brain controlling mental processes such as thinking clearly and logically, learning, paying attention, memory, decision making and forward planning"