From the Research
Erythema ab igne is a skin condition that can be effectively managed by removing the heat source that caused the condition, with a good prognosis and potential for complete remission, as noted in the most recent study 1. The condition is characterized by a reddish-brown, reticulated (net-like) discoloration that occurs after prolonged exposure to moderate heat sources, such as heating pads, laptops, and space heaters. Key points to consider in the management of erythema ab igne include:
- Removal of the heat source is the primary treatment, with mild cases resolving on their own within several months 2
- Topical retinoids, such as tretinoin 0.05% cream, can help reduce hyperpigmentation in persistent cases 3
- 5-fluorouracil cream can be considered for more severe cases with pre-cancerous changes 3
- Laser therapy, particularly using intense pulsed light or pulsed dye lasers, may improve appearance in chronic cases 4
- Regular skin monitoring is essential, as erythema ab igne has been associated with an increased risk of skin cancer in long-standing cases, including squamous cell carcinoma, Merkel cell carcinoma, and cutaneous marginal zone B cell lymphoma 1, 5 The condition develops because repeated heat exposure causes damage to superficial blood vessels and local tissue, leading to hemosiderin deposition in the skin. Prevention is crucial, and patients should be advised to avoid direct contact with heat sources against the skin for extended periods and use protective barriers when using heating devices. In terms of specific management strategies, the most recent study 1 notes that there are no current US Food and Drug Administration-approved therapies for treatment of EAI hyperpigmentation, but removal of the heat source often results in spontaneous resolution over time. Overall, a comprehensive approach to managing erythema ab igne should prioritize removal of the heat source, regular skin monitoring, and consideration of topical and laser therapies as needed.