Taking hepatitis B antiviral medication may cause hair loss, but the effect will usually be relatively small. Some hepatitis B antiviral drugs, or long-term use of large amounts of interferon, may have adverse reactions, resulting in hair loss in some patients, but the general phenomenon will not be very obvious, and the hair will grow again after stopping the drug. If patients with hepatitis B have combined skin diseases, irregular diet, resulting in malnutrition or seborrheic dermatitis, as well as excessive mental stress, long-term lack of good rest, etc., can also cause hair loss, and can not be sure whether it is taking hepatitis B antiviral drugs after hair loss phenomenon. Therefore, according to their own actual situation, under the advice and guidance of the doctor, reasonable choice of drugs. If the phenomenon of hair loss is serious, it is necessary to go to the hospital in time for examination and symptomatic treatment, so as to avoid other adverse effects on the body.