Pneumocystis carinii (PC) otitis is a rare opportunistic infection of
the acquired immunodeficiency syndrome (AIDS). initially hearing loss
and otalgia occur with thickening of the tympanic membrane and the bor
dering skin of the ear canal. Otorhea, ear polyps, perforation of tymp
anic membrane, destruction of mastoidal bone, and participation of cra
nial nerves are observed. Diagnosis is established histologically. The
treatment of the parasite is by trimethoprim-sulfamethoxazole combina
tions. The immunological situation seems to be better than in PC pneum
onia. Due to the underlying immunological incompetence the infection c
an not be expected to limit itself. To prevent severe complications as
sequestrating mastoiditis, early diagnosis and specific surgical and
medical treatment are neccessary.