Rapid hair regrowth in a patient with alopecia universalis treated with a JAK3/TEC family kinase inhibitor
13 Jan 2026
byDr. Dr Patrick Chun-Yin Chong, Specialist in Paediatric Immunology, Allergy and Infectious Diseases, Private practice, Hong Kong
A
12-year-old boy presented with longstanding alopecia universalis (AU) in March
2024, with complete loss of scalp hair corresponding to a Severity of Alopecia
Tool (SALT) score of 100, as well as loss of all eyebrows, eyelashes, and body
hair. Responses to previous treatments were suboptimal. In September
2024, the patient (SALT 50) was switched to ritlecitinib 50 mg QD as it had
become available in Hong Kong through a medication access programme. By
February 2025, the patient’s SALT score had improved to 0–10 (complete scalp
hair regrowth), with complete regrowth of eyebrows and eyelashes.