What are all the conditions that may cause ear pain?

Hello,

Welcome to icliniq.com. Your friend has been taking Franxit (Amitriptyline, Chlordiazepoxide) for how long? Any anti-depressant medication should not be abruptly stopped, and all somatic symptoms and even fatigue, headache, and nervous instability could be related to sudden withdrawal also. Moreover, taking into consideration of outer ear pain, otitis external must be ruled out. Does she have glue in the ear? Does she feel fullness inside the ear? Neurological problems related to the ear could be due to facial nerve insult due to virus -HZV (Ramsay Hunt syndrome) and there would be blisters in the ear which is less likely in her. Other than the above, I do not think any other neurological cause for the pain you mentioned. Does she complain of any face deviation? If not, no need to panic. The probable cause is Sudden stop of antidepressant. The differential diagnosis is facial palsy. The probable diagnosis is post antidepressant withdrawal. Treatment plan include Resume Franxit and withdraw slowly for a period of six to eight weeks. She may need a neurologist review to rule out seventh nerve paresis.