You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which is a causative organism for malignant ot externa and explain in detail?
Ans. (b) BacteriaRef: Dhingra's ENT 5th ed. 157-58* Malignant otitis externa is caused by pseudomonas infection in elderly, diabetics & patients on the immune- compromised drugs .* Early manifestation resembles diffuse otitis externa. Patients have severe pain & appearance of granulation in meatus.Infectious Etiology of Ear CanalBacterialFungalViral* Localized otitis externa* Diffuse otitis externa* Malignant otitis externa* Otomycosis* Herpes zoster oticus* Otitis externa hemorrhagica