Hi, my mother is taking Benezotanate (Tessalon) 200mg t.i.d. and Benadryl. She was given these medications because of acute bronchitis and adverse reaction to Mucinex. She has red blotches (kind of like a rash) on her eyes. She is experiencing burning in the eyes and the rash/blotches seems to be spreading. What could this indicate? I am very worried about her. She also says that her eyes itch. She is constantly rubbing her eyes.