<prompt> Toxic epidermal necrolysis is also called asLyells syndromeDuhrings diseaseSweets syndromeHailey and Haileys disease  <response>: Other name for toxic epidermal necrolysis is Lyell s. Syndrome Stevens-Johnson syndrome SJS and toxic epidermal necrolysis TEN are rare, potentially life-threatening, severe mucocutaneous adverse reactions characterized by extensive epidermal detachment, erosion of mucosae and severe constitutional symptoms Ref Harrison20th edition pg 1278 