Adult Black Dot Tinea Capitis Caused by Trichophyton Tonsurans Complicated with Herpes Zoster

A 53-year-old Chinese female presented with tinea capitis (TC) caused by Trichophyton tonsurans, which was complicated by herpes zoster. The TC was treated successfully with oral terbinafine and topical antifungals, resulting in alleviation of symptoms and negative fungal cultures. However, the patient developed herpes zoster during treatment, likely due to immunosuppression from a previous breast cancer treatment. After antiviral therapy, the herpes zoster symptoms subsided, and the patient fully recovered without relapse of either condition at a 9-month follow-up. This case highlighted the rare occurrence of T. tonsurans in Guangdong and suggested that skin damage from TC might trigger herpes zoster in immunocompromised individuals.