What could be the cause of my body-wide hair loss and receding hairline after having COVID-19, and could it be linked to an autoimmune condition or liver issues, given that I have elevated liver enzymes, high cholesterol and blood fats, low iron stores, and low vitamin B12, and have seen no improvement from taking finasteride, ascazin, and multivitamins?
Having COVID-19 often triggers a temporary shedding condition called telogen effluvium. Your low iron stores and low vitamin B12 are also major culprits that can cause and prolong hair loss, which is likely why finasteride hasn't helped, as it primarily targets male pattern baldness. While your elevated liver enzymes and cholesterol reflect systemic health that needs a doctor's care, they are less likely to directly cause body-wide hair loss. I gently encourage you to work with your doctor to safely correct your iron and B12 levels, which should help restore your hair over time.