Severe hair loss can be caused by resting hair loss, androgenetic alopecia, patchy baldness, etc. It can be helped by life conditioning, topical medication, oral medication, and so on. However, the efficacy varies from person to person, and there is no so-called fast way to stop hair loss. 1. Resting hair loss: The hair growth cycle includes three periods: the growth period, the degeneration period and the resting period. If the patient has stayed up all night for a long time, lack of sleep, excessive mental stress, etc., a certain proportion of hair in the growth period will be rapidly transitioned to the resting period, which will lead to a more serious hair loss. This kind of hair loss can usually be gradually improved with the removal of the triggering factors, so patients need to adjust their lifestyles to ensure adequate sleep and a good state of mind. 2. Androgenetic alopecia: androgenetic alopecia, also known as seborrheic alopecia, is characterized by miniaturization of hair follicles and reduction in the number of hairs, leading to a series of manifestations such as severe hair loss and receding hairline. Hair loss can be improved by taking Finasteride and Spironolactone orally and applying Minoxidil tincture externally. 3. Patch baldness: Patch baldness is a kind of hair loss disease related to autoimmune, genetic, endocrine and other factors, and its hair loss is often manifested as the sudden appearance of patches of hair loss on the scalp with clear boundaries, such patients can be applied with topical minoxidil, topical or topical injection of glucocorticosteroids, oral cystine, vitamin B, and other medications to help treatment, which can help to quickly stop hair loss. It should be noted that the above treatments should be carried out under the supervision of a physician to avoid adverse reactions.