TY - JOUR T1 - Metronidazole-induced fixed drug eruption JF - BMJ Case Reports DO - 10.1136/bcr-2013-200470 VL - 2013 SP - bcr2013200470 AU - Naveen Kumar AU - Deepak Sundriyal AU - Meenu Walia AU - Deepshikha Trisal Y1 - 2013/11/11 UR - http://casereports.bmj.com/content/2013/bcr-2013-200470.abstract N2 - A 67-year-old man presented with a history of an itchy, erythematous oval lesion over the right calf (figure 1). He was prescribed metronidazole for dysentery 1 day earlier. He mentioned history of a similar eruptive lesion in the same location, after he was prescribed metronidazole for an episode of diarrhoea about 4 months previously. At that time, the lesion appeared after 3 days of treatment. It was itchy and it healed after stopping the drug leaving a residual hyperpigmentation. Hence, we suspected it to be fixed drug eruption (FDE) due to metronidazole. As oral challenge test is risky and patch test is not available in our clinic, we assessed a causal relation between the drug and the adverse drug reaction (ADR) using Naranjo et al … ER -