Application of Phototherapy in Alopecia

The document from 2017 discussed the application of phototherapy in treating alopecia. Common causes of hair loss such as male/female pattern baldness, infection, medication, trauma, pregnancy, immune disorders, and hypothyroidism were mentioned. The study noted that phototherapy has been increasingly reported as a treatment for hair loss, although its exact mechanism was not fully understood. It was suggested that it might be related to promoting cell growth, anti-inflammation, and immune regulation. The research indicated that phototherapy could effectively improve male/female pattern baldness, alopecia areata, and hair loss after chemotherapy, promoting hair growth without severe adverse reactions. However, the study concluded that further research was needed to determine the appropriate treatment population and select suitable instrument parameters such as wavelength, frequency, pulse structure, energy density, time, and treatment cycle.