Toxic epidermal necrolysis

Severe skin reaction involving fever, blistering, and peeling

Toxic epidermal necrolysis (TEN), also known as Lyell's syndrome, is a type of severe skin reaction. Together with Stevens–Johnson syndrome (SJS) it forms a spectrum of disease, with TEN being more severe. Early symptoms include fever and flu-like symptoms. A few days later the skin begins to blister and peel forming painful raw areas. Mucous membranes, such as the mouth, are also typically involved. Complications include dehydration, sepsis, pneumonia, and multiple organ failure.

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