Erythema ab igne | Heater dermatitis

Skin exposed for long periods of time to heaters: fireplace, electric radiator, space heater
 
Front and inner sides of the legs
Mesh-like erythema
Network of brown pigmentation
Could be confused with livedo reticularis
 
Histology
  • Increase and dilation of the capillaries, whose walls are thickened
 
Treatment
  • Avoid trigger
  • Pigmentation persists for a long time
 
Possibility of malignant transformation