Inclusion conjunctivitis in adults usually presents with a history of several weeks or months of a red, irritable eye with a sticky discharge. Often the symptoms are in one eye only. Clinical signs include large lymphoid follicles and papillary hyperplasia of the palpebral conjunctiva, with or without conjunctivitis. On close questioning a large proportion of female patients, more than male patients, admit to some genito-urinary symptoms. The differential clinical diagnosis includes adenovirus, herpes simplex virus, vernal conjunctivitis and staphylococcal conjunctivitis. Otitis media is a relatively common complication.