Dermoscopy: A Rapid Bedside Tool to Assess Monilethrix

The document described a case of monilethrix, a rare genetic disorder causing fragile hair and alopecia, in a 12-year-old girl. Dermoscopy, a rapid bedside tool, was used to diagnose and assess the extent of the condition by identifying characteristic beaded hair patterns. The patient exhibited symptoms such as keratotic papules and progressive alopecia, with similar but milder symptoms in an older sister. Dermoscopy revealed beaded hair with a "regularly bended ribbon sign," aiding in diagnosis and preventing misdiagnosis. The patient was treated with 5% minoxidil and antihistamines, and the importance of avoiding hair trauma was emphasized.