Localized Donor Area Acute Telogen Effluvium following Follicular Unit Extraction: Key Trichoscopic Findings.

Introduction: Telogen effluvium is a form of non-scarring alopecia characterized by an increased hair shedding rate induced by mechanical or inflammatory factors.

Case report: A 27-year-old healthy male patient presented with several itchy alopecic patches in the occipital region. The patient had undergone a follicular unit extraction 6 weeks before with complete recovery after 1 week. Upon trichoscopy, we found empty follicular openings, short regrowing hairs, and coudability hairs. A diagnosis of acute telogen effluvium was made, and the patient was started on betamethasone lotion for daily use as a means to treat pruritus. After 1 month, the patient presented an almost complete response.

Conclusion: While acute telogen effluvium is commonly seen in the receptor area after a hair transplant, the incidence of the donor region as a presentation is unknown. Common trichoscopic findings in telogen effluvium include empty follicular openings, short regrowing hairs, and lack of other signs usually seen in other types of alopecia. This description was consistent with what we found in our patient. Trichoscopic findings can help in the diagnosis, and understanding its natural course, physicians can reassure the patient about the self-resolutive outcome of this condition.