Toxic Epidermal Necrolysis (TEN)

Toxic Epidermal Necrolysis (TEN) is a rare but serious skin condition that causes large areas of the skin to peel off, similar to a severe burn. It affects the skin and mucous membranes, which are the moist linings inside the mouth, eyes, and other body parts. This condition usually happens as a reaction to certain medications or infections. The skin damage can lead to severe pain, risk of infection, and problems with body temperature regulation. Because the skin acts as a protective barrier, losing it can cause serious health issues. People with TEN often need urgent medical care to manage symptoms and prevent complications. The condition can be life-threatening if not treated promptly.

Toxic Epidermal Necrolysis (TEN) is a severe, life-threatening mucocutaneous disorder characterized by widespread keratinocyte apoptosis leading to full-thickness epidermal necrosis and detachment. It is most commonly triggered by an adverse reaction to drugs such as anticonvulsants, sulfonamides, and allopurinol. The pathogenesis involves a cell-mediated cytotoxic immune response with activation of CD8+ T cells and release of granulysin, causing massive epidermal cell death. Clinically, TEN presents with extensive erythema, blistering, and skin sloughing involving more than 30% of the body surface area, often accompanied by mucosal involvement. It is considered part of a spectrum with Stevens-Johnson syndrome (SJS), distinguished primarily by the extent of skin detachment. The condition carries a high risk of sepsis, fluid loss, and multiorgan failure, making early recognition and management critical.