Reports of cases presenting a curious combination of two known clinical entities, folliculitis decalvans and lichen spinulosus, are comparatively rare in the literature.
In 1915, Graham Little1 presented a case before the Royal Society of Medicine in which both these conditions existed. His patient was a woman, aged 55, who said that her hair had been falling out in patches over a period of ten years. Five months before presentation, the patient suffered a sudden inflammation, with itching of the scalp, in which the hair came out in handfuls. At the same time, there appeared on the axillae, groins and flexors of the elbows an itchy, follicular eruption made up of grouped patches. On the back and external surfaces of the arms, there was a diffuse spiny folliculitis.
Dore2 and Beatty3 reported somewhat similar cases in the same year, although, as a result of histologic study,
TRAUB EF, TOLMACH JA. FOLLICULITIS DECALVANS AND LICHEN SPINULOSUSREPORT OF A CASE. Arch Derm Syphilol. 1931;24(1):101–103. doi:10.1001/archderm.1931.01450010106008