Part A
Tiffany, a 21-year-old college student, is having trouble sleeping, cries frequently, and has recurrent thoughts of suicide. An antidepressant is prescribed. Like many such drugs, this antidepressant has anticholinergic side effects.

1. What side effects might Tiffany experience in the first week of treatment?
   

Part B
Maria, a 9-year-old girl, told the clinic physician that her “ear lump hurt” and she kept “getting dizzy and falling down.” As she told her story, she pointed to her mastoid process. An otoscopic examination of the external acoustic meatus revealed a red, swollen eardrum, and her throat was inflamed. Her condition was described as mastoiditis with secondary labyrinthitis.

1. Describe the most likely route of infection and the infected structures in Maria’s case.
2. Explain the cause of her dizziness and falling.