What is the main complication of hypotension?

Syncope: The main risk of hypotension, or low blood pressure, is passing out, or "syncope". If this occurs while you are driving, up on a ladder, holding a small child or using a knife or hedge trimmer, for example, this could have disastrous consequences. There are medications that make your blood pressure go up, some by retaining salt and water, like florinef, (fludrocortisone) some by constricting vessels, proamitine.