Los Angeles [US], January 31 (ANI): American actor Lili Reinhart revealed that she had an alopecia diagnosis, reported the Hollywood Reporter. Recently, the ‘Riverdale’ star took to TikTok to post a video of her undergoing red light therapy, and wrote in the clip, “Was just diagnosed with alopecia in the midst of a major depressive episode.” Alopecia develops when the “immune system attacks hair follicles and causes hair loss,” according to the National Institute of Health. It mainly affects the head and face, but hair loss can occur anywhere on the body. According to the National Alopecia Are…