My nephew is 41 years old and recently has had glaucoma and tx with timolol and has had severe reaction of numbness, tingling of feet and armpits, sometimes forehead numb, trouble concentrating, lightheadedness, sometimes nausea and sweating especially when he eats, severe anxiety, forgetting what he is saying mid sentence. He has stopped timolol for 48 hours but still has symptoms. What could it be. Eye exam normal except for glaucoma. He has noted his L ear feels plugged intermittently. He also report severe thirst and very hungry.