Loose hair will most likely accumulate on your pillow, in your hairbrush or comb, or in your sink or shower drain. Your scalp may be sore. You may experience fever, pain, or irritation at the injection site. If you lose your hair, it won't go away on its own. Stay aware of what's going on with your headdress/headscarf. If you notice hair loss, ask your doctor if there is a medical reason for this side effect. Sometimes the cause is unrelated to treatment but could be due to other factors such as illness, stress, or low blood platelets (which can be a side effect of chemotherapy). Your doctor may recommend products such as minoxidil or finasteride to help prevent further loss of hair. Finasteride (Propecia) may also be used to treat prostate cancer that has spread to the bone. Minoxidil (Rogaine) may improve your hair growth after it has been damaged by treatments such as radiation or alopecia areata.