Head hurts when my mom bends down always doctor says she has migraines for a year but now when she sits down her head hurts when she bends down or si?

Blood pressure: Nora, migraines don't come on when you bend your head down, although if she is already hurting it could make them worse. She needs to be SURE her blood pressure is normal, and even if it is, if the headache comes on when sitting and bending down or straining in the bathroom, she needs to be evaluated for another cause. Go to drugstore and take BP in sitting and bending down and record the result