This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Facial Nerve And Its Disorders, Subject name: ENT
[{'content': 'Recent studies suggest causative organism of Bells palsy is \nSelect and explain. \nA. Herpes virus, B. HIV virus, C. Papilloma virus, D. Rota virus', 'role': 'user'}, {'content': "Answer: A \nExplanation: (Herpes virus): (105- Dhingra 5th edition; 185- P. Hazarika 3rd/ed)Bell's palsyViral theory - Most of the evidence support the viral aetiology due to herpes simplex herpes zoster or the EB virus (105-D)* Viral infection like Herpes zoster, poliomyelitis and infectious mononucleosis which proves that facial nerve is very prone for viral infections (185- Hazarika)* Herpes simplex virus (HSV-1) has been known to cause fascial paralysisBell's phenomenon - The patient will not be able to close the eye on the affected side. The eyeball will roll up on every attempt of closure", 'role': 'assistant'}]