Hair Loss Symptoms And Causes Mayo Clinic Many forms of hair loss are either self-limited (telogen effluvium or drug side effects) or respond to treatment with medication (tinea capitis). even hereditary-pattern baldness tends to improve with treatment. however, treatment must continue indefinitely. in some conditions, hair loss cannot be reversed, especially if scarring has developed (as can happen in lupus-related scalp disease). "hair loss and hair shedding are technically two different problems. hair loss is when something stops the hairs on your head from growing. unless you treat the cause, the hair doesn't start growing again," says dr. hurley. "shedding is when your hair is still growing, but more hairs than usual fall out each day. Why Is My Hair Falling Out 10 Causes Of Hair Loss Hair loss doesn't happen fast, our strands grow in cycles, which means it can take up to 3 months for hair to fall out after a trigger has caused it. "if you notice ex...