“…Erythema ab igne is caused by repeated or prolonged exposure to heat from 43°C to 47°C (109°F to 117°F), which is below the thermal burn threshold. 1 Common heat sources include wood stoves, open fi res, laptops, tablets, neurostimulators, telephones, electric heaters, heated blankets, heated patches, and virtual-reality headsets. 2 Underlying medical conditions for chronic heat exposure must also be considered, such as chronic pain, pancreatitis, and peptic ulcer disease, as patients with these conditions often resort to local hot compresses for pain relief.…”