Keratosis Follicularis Spinulosa Decalvans: Diagnosis and Therapeutic Evaluation

Keratosis Follicularis Spinulosa Decalvans (KFSD) was described as an X-linked genodermatosis that caused scarring alopecia and follicular hyperkeratosis, primarily affecting males while females were carriers with milder symptoms. The document presented a case of two siblings, a 9-year-old boy and a 5-year-old girl, both showing symptoms of KFSD. This condition typically began in infancy or early childhood and fell under the broader category of Keratosis pilaris atrophicans (KPA), which included three rare and distinct clinical entities characterized by scarring types of keratosis pilaris.