Scleredema in an infant.

A 3-month-old infant with scleredema had associated cytomegalovirus pneumonia with a rapidly fatal course. Because differentiation of scleredema from scleredema neonatorum, subcutaneous fat necrosis, and scleroderma may be difficult, histologic diagnosis is important. Cetylpyridinium chloride was used successfully as a fixative to demonstrate acid mucopolysaccharides histologically.