This patient had erythroderma, which involves widespread erythema and scaling of the majority of the skin. Erythroderma can be caused by severe variants of several skin disorders, including atopic dermatitis, contact dermatitis, and psoriasis. In this case, a punch biopsy from the forearm was most consistent with erythrodermic psoriasis.
Erythrodermic psoriasis is a rare subtype of psoriasis and most often develops as an exacerbation of preexisting plaque psoriasis and is defined by erythema, scale, and desquamation covering 75% to 90% of the body surface.1 The alteration in the skin negatively affects heat exchange and hemodynamics and can be life threatening. Many cases develop as a rebound reaction in patients with preexisting psoriasis treated with systemic steroids that are discontinued. Patients with dehydration, poor urinary output, hypotension, or significant weakness may benefit from supportive inpatient care while treatment is initiated.1
Initial treatment options for patients with erythrodermic psoriasis include biologics and steroid-sparing immunosuppressants, such as cyclosporine and acitretin. While a patient awaits the initiation of a definitive therapy, topical triamcinolone 0.1% may be applied over the entire skin surface twice daily and covered with 2 layers of scrubs or pajamas. The pair closest to the skin should be slightly damp and the outer pair should be dry to help retain heat. These are referred to as wet wraps or wet pajama wraps.
The patient described here was hemodynamically stable and was allowed to initiate wet pajama wrap therapy at home while awaiting initiation of adalimumab as an outpatient. He has improved dramatically with adalimumab given subcutaneously every 2 weeks.
Photos and text for Photo Rounds Friday courtesy of Jonathan Karnes, MD (copyright retained). Dr. Karnes is the medical director of MDFMR Dermatology Services, Augusta, ME.