acyclovir and Dermatitis--Seborrheic

We present a case of a 10-year-old boy with a longstanding history of seborrheic dermatitis (SD) referred to the Allergy and Immunology Department for recurrent Kaposi varicelliform eruption (KVE) secondary to herpes simplex 1 (HSV-1) infection and possible primary immunodeficiency. The patient was the second child of non-consanguineous parents, with an older, healthy brother. Family history was negative for primary immunodeficiency and skin disorders. The patient's skin problems began in infancy when he was diagnosed and treated by a dermatologist for SD. From preschool age, he was under the care of a pediatric neurologist and a defectologist for a sensory processing disorder. For the last two years, the patient had been receiving chlorpromazine therapy for aggressive behavior. The first episode of KVE was diagnosed at the age of six, following potent topical corticosteroid therapy for SD and sun exposure, another known risk factor for HSV infection. After the third KVE episode, prophylaxis with oral acyclovir was initiated. The skin changes were treated with topical steroids and oral antibiotics during disease flares, with poor clinical response. On presentation, the patient was in good general health, adipose, and of unremarkable somatic status, except for numerous symmetrical yellowish-brown keratotic papules and plaques on the forehead, cheeks, and the lateral side of the neck (Figure 1). The nail plate had multiple red and white longitudinal streaks and V-shaped notches on the distal free end of the nail plate (Figure 2). The allergy tests revealed increased total immunoglobulin E (IgE) and sensitization to ragweed. Immunological workup showed normal immunoglobulins and good specific immunity (good vaccine response and normal humoral response to HSV-1) but a decreased number of T- cells (CD3+ 1020/µL (1320-3300), CD3+CD8+ 281/µL (390-1100) with normal T-cell response after antigen stimulation. The diagnosis of Darier disease (DD) was confirmed based on medical history, clinical findings and histological finding of focal suprabasal acantholysis and dyskeratosis (Figure 3). Low-dose oral retinoid therapy was initiated with modest clinical response after 6 months of therapy. In the light of recent publication (1), we initiated intravenous immunoglobulin (IVIG) substitution (400 mg/kg every month) with excellent clinical response. After 4 months, the patient's skin improved in terms of reduced inflammation, scab healing, and reduced itching. Acyclovir p

Topics: Acyclovir; Adolescent; Adult; Child; Child, Preschool; Darier Disease; Dermatitis, Allergic Contact; Dermatitis, Seborrheic; Herpes Simplex; Humans; Immunoglobulins, Intravenous; Kaposi Varicelliform Eruption; Male; Retinoids; Young Adult

Eczema herpeticum has been well described in the setting of atopic dermatitis (AD) and other dermatoses. We present the case of a 2-month-old infant boy with cutaneous herpes simplex virus (HSV) infection within existing diffuse infantile seborrheic dermatitis. Providers should be aware that cutaneous HSV can be confined to a seborrheic distribution and may represent underlying epidermal dysfunction secondary to seborrheic dermatitis.

Topics: Acyclovir; Antiviral Agents; Dermatitis, Atopic; Dermatitis, Seborrheic; Diagnosis, Differential; Humans; Infant; Infusions, Intravenous; Kaposi Varicelliform Eruption; Male; Scalp Dermatoses; Simplexvirus