When actress Alyssa Milano was first struck by the new coronavirus back in March, her symptoms mirrored the classic signs of COVID-19: fever, headache, loss of smell, chest heaviness, extreme breathing difficulties and a bad stomach. "It felt like I was dying," Milano, 47, posted on Twitter. Those symptoms have persisted, and even expanded to include vertigo, heart palpitations, memory loss, confusion, menstruation disruption and general malaise. The good news is that Milano, star of several TV series -- such as "Who's the Boss," "Melrose Place" and "Charmed" -- said she's finally on the road to recovery. The bad news: COVID-19 is now causing her hair to fall out. "This is my hair loss from COVID-19," declared Milano, who returned to Twitter on Sunday to post a video of her ongoing ordeal. Armed with a detangler brush, she's seen slowly combing through her hair. One minute later, she holds up a large clump of hair. "I just wanted to show you the amount of hair that is coming out of my head as a result of COVID," she said. What's happening? "Telogen effluvium," explained Dr. Patrick Angelos, a board-certified plastic and reconstructive surgeon at Charleston Plastic Surgery, in South Carolina. A specialist in hair restoration, Angelos said the condition is characterized by "a temporary loss [of hair] thought to be a defense mechanism to help the body conserve vital energy, nutrients for fighting infection [or] recovering from trauma." The condition is unlikely to be directly caused by COVID-19 itself, he said. Rather it's "likely an immune and systemic response caused by the body's reaction to the virus."