 [ Symptoms ] i take atenolol flecainide hydrochlorothiazide prednisone and warfarin do any of them cause thinning hair [ Disease ] thinning hair can be caused by many factors and should really be evaluated by a physician age and hormones are the most likely culprits prednisone can cause hair loss since it affects hormone levels in the body but you should talk to your health care professional who can properly examine you and perform any necessary tests to help solve the mystery of your thinning hair