JAK2 Expression in Androgenetic Alopecia Before and After Topical Minoxidil

Inclusion Criteria: * Male adults aged 18 to 50 years with androgenetic alopecia. * Mild to moderate disease severity, defined as Hamilton-Norwood scale II to V. * Patients who are treatment-naive or willing to undergo an adequate washout period for prior hair loss therapies of at least 1 month. * Willing and able to provide written informed consent. Exclusion Criteria: * Other types of hair loss, including inflammatory or scarring alopecia. * Inflammatory scalp dermatoses, such as psoriasis or seborrheic dermatitis. * Use of systemic immunosuppressants, JAK inhibitors, or systemic corticosteroids within the last 12 months. * History of severe systemic disease, including renal, cardiovascular, or hepatic disease. * Chemotherapy during the last 5 years. * Bleeding disorders.