A 26-year-old male weighing 58 kg suffering from an earache from 1-week was presented with itchiness and ear discharge. There was no history of reduced hearing, tinnitus, vertigo or any other medical illness. When the ear was inspected, the canal appeared red and swollen, touching or moving the outer ear increased the pain. At this stage, the patient was diagnosed as otitis externa and prescribed the chloramphenicol ear drop 5% 4 times a day. The patient developed rashes all around the ear, including pinna.
Rashes were round in shape, raised from the body surface, appeared reddish in color, and hot on touch. What can be the probable reason for developing such clinical presentation? *This case is from Docplexus editorial team for educative purpose only. Source: Journal of clinical pharmacology