Special types of otitis media are often due to specific bacterial infections or special conditions that cause otitis media, often as a local manifestation of systemic disease. These include: 1. Tuberculous otitis media: caused by Mycobacterium tuberculosis, often accompanied by tuberculosis. 2. AIDS otitis media: caused by HIV with prolonged pus flow. 3.Syphilitic otitis media: caused by syphilitic spirochetes. 4.Fungal otitis media: caused by fungal infection, often caused by diabetes mellitus and extensive application of hormone therapy. 5. Necrotizing otitis media, etc.