Frontal lobe may cause behavioral and emotional changes, impaired judgment, impaired sense of smell, memory loss, paralysis on one side of the body, reduced mental abilities, and vision loss.
Parietal lobe may cause impaired speech, inability to write, lack of recognition, and spatial disorders.
Occipital lobe may cause vision loss in one or both eyes.
Temporal lobe may cause impaired speech and memory difficulty.
Brainstem may cause behavioral and emotional changes, difficulty speaking and swallowing, drowsiness, hearing loss, muscle weakness on one side of the face (e.g., head tilt, crooked smile), muscle weakness on one side of the body, uncoordinated gait, drooping eyelid or double vision, and vomiting.
Pituitary gland may cause increased secretion of hormones (Cushing’s Disease, acromegaly), a stop in menstruation, abnormal secretion of milk, and decreased libido.