Erythroderma hirsutum is a skin disease with yellowing palmoplantar keratosis, red follicular papules fusing to form orange-red scaly plaques, and patches of erythema visible as islands of normal skin. The etiology of hair red furunculosis is unknown. Two clinical types are most common: one is juvenile typical hair erysipelas, which is autosomal dominant and starts in children; the other is adult-onset typical hair erysipelas, which has no typical genetic characteristics and often occurs in adults. The atypical type is present in all age groups. The diagnosis can be made by clinical presentation and sometimes relies on biopsy. The differential diagnosis has to consider seborrheic dermatitis, especially in children, when lesions appear on the scalp, elbows and knees, to differentiate it from psoriasis. Treatment takes several years, and scaling can be improved by sealing the pack with lubricant live 12% lactic acid followed by topical sebaceous steroids. Oral vitamin A, may be effective. Patients with ineffective topical management may opt for oral retinoic acid or methotrexate.