Erythema ab igne

Erythema ab igne with features resembling keratosis lichenoides chronica

“…The overall pathophysiology of EAI is unknown, but likely involves changes in dermal elastic fibers, dermal venous plexus vasodilatation, and hemosiderin deposition 1,2 . The clinical differential diagnosis typically includes livedo reticularis, livedo racemosa, and poikiloderma 8 .…”

“…1 Laptop computers have become a frequent cause, producing lesions on the left anterior thigh because of positioning of batteries, ventilation fan exhausts, and optical drivers. 2 First described by Kaposi in 1895, the term keratosis lichenoides chronica (KLC) defines a rare lichenoid hyperkeratotic dermatosis, although the disease has been known by a variety of nomenclatures. 3,4 KLC is characterized by linear or reticular patterns of violaceous papules or plaques with overlying scale on the trunk and extremities.…”

“…Common sources of exposure include heated car seats, heated blankets, portable space heaters, and heating pads 1 . Laptop computers have become a frequent cause, producing lesions on the left anterior thigh because of positioning of batteries, ventilation fan exhausts, and optical drivers 2 …”

What Is This Reticulated, Erythematous Eruption on a Woman’s Buttocks?

“…Current heat sources that cause erythema ab igne include heating pads, car heaters, electric space heaters, hot water bottles, and laptops. 4,5 Originally described in people who sat near open flames or used hot stoves, more recently erythema ab igne has been found among those with chronic pain who thereby use heat sources for symptomatic relief. Although this lesion typically presents asymptomatically, it has been also associated with causing sensations of pain, burning, and pruritus in affected individuals.…”

“…Iris Hunt, MS 1 consultant360.com ab igne increases the risk for cutaneous malignancies such as actinic keratosis and squamous cell, basal cell, and merkel cell carcinomas. 5,7 The differential diagnosis of erythema ab igne is broad. Reticular lesions are associated with connective tissue disease, hypercoagulable states secondary to antiphospholipid antibodies, use of certain medications such as amantadine and memantine, 8 as well as complex regional pain syndrome (ie, reflex sympathetic dystrophy).…”