This rather common condition of the skin has almost escaped description in American textbooks and the literature on dermatology. It has been described in the foreign literature under a variety of descriptive names.
Unna1 described the lesions accurately, considering them as a hypertrophy of the sebaceous glands. His description is confusing because he went on to describe adenoma sebaceum (Pringle), an entirely unrelated disorder, under the same subhead. Hirschfeld,2 from a study of six biopsies on four patients, considered the condition a pure hyperplasia of the sebaceous glands. He noted that while the disorder most commonly occurred in senile persons, it might occur in people still in the forties. He emphasized that the skin was otherwise normal for a person of that age, and that there were no degenerative changes as in seaman's skin, no seborrhea and no rosacea. I cannot agree as to the last two details,
NOMLAND R. SENILE SEBACEOUS ADENOMA. Arch Derm Syphilol. 1930;22(6):1004–1009. doi:10.1001/archderm.1930.01440180050004
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