Erythema ab igne Jaime Company-Quiroga, Sergio Alique-García, Alberto Romero-Maté Indian Journal of Dermatology, Venereology, and Leprology 2019 85(4):405-406 A 43-year-old man with a long history of ankylosing spondylitis had intense pruritus at the application sites of fentanyl transdermal patches used to treat pain of ankylosing spondylitis. To ease the itch, he showered himself with extremely hot water at least 10 times a day for several months. Dermatological examination revealed confluent and reticulate erythematous macules on the chest [Figure 1] and upper arms. Erythema ab igne was diagnosed and he was advised to stop hot showers, following which the lesions improved within few weeks. Figure 1: Erythematous, infiltrated macules distributed in a confluent and reticulated pattern on the chest  Click here to view Declaration of patient consent The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient has given his consent for his images and other clinical information to be reported in the journal. The patient understands that name and initials will not be published and due efforts will be made to conceal identity, but anonymity cannot be guaranteed.