Fludrocortisone and Midodrine are both medications that can help raise blood pressure. Ask your physician if one of these medications would be right for your situation. People are not generally prescribed medicine for low blood pressure, as it's not often a cause for concern unless it presents with symptoms.
Why do the middle fingers lock up when experiencing pain in neck and shoulders?   One cause could be some kind of impingement (pressure or swelling that applies pressure) of the spinal cord at C7, one of the cervical segments of your spine.
Repeated and increasingly prolonged depletion of blood flow to the fingers can cause ulcers in the skin and tissue death (also called necrosis, see Figure 3). The other cause of cold hand or fingers is vaso-occlusion, which happens when one or more of the blood vessels in the hand or wrist become blocked. Raynaudâs Disease and Raynaudâs Phenomenon. There are many specific diseases of blood vessels that can cause vasoconstriction and vaso-occlusion.