Reticulated, interlacing, hyperpigmented patches with a few, scattered,<unk> tous macules at junctions on the medial aspects of the lower legs Different types of heat sources can cause this condition such as: * Repeated application of hot water bottles, heating blankets or heat pads to treat chronic pain—e.g., chronic backache. * Repeated exposure to heated car seats, space heaters, or fireplaces. Repeated or prolonged exposure to a heater is a common cause of this condition in elderly individuals. * Occupational hazards of silversmiths and jewellers (face exposed to heat), bakers and chefs (arms, face) * Resting a laptop computer on the thigh (laptop computer-induced<unk> . In a 2012 review, Riahi and Cohen describe the characteristics of laptop computer-induced<unk> . Temperatures between 43 and 47 °C can cause this skin condition; modern laptops can generate temperatures in this range. Indeed, laptops with powerful processors can reach temperatures of 50 °C and be associated with burns. Positioning of the laptop on the thighs can allow for direct exposure to the heating elements of the laptop, which include the central processing unit (CPU) and the graphics processing unit (GPU). At least 15 cases have been reported by 2012 with the condition usually affecting the left anterior thigh. In these reports, 9 of the 15 patients were women (60%) with an average age of 25 years at diagnosis. * In Kashmir, due to the use of a kanger which also causes kangri cancer. * It is a classic finding in chronic pancreatitis and may also be seen in people with hypothyroidism or lymphoedema
Erythema ab igne
Pathergy
Prurigo simplex
Papular eruption of blacks
Wrinkly skin syndrome
Dandruff
Prurigo nodularis
Sunburn