Raynaud's phenomenon is a problem that causes decreased blood flow to the fingers. In some cases, it also causes less blood flow to the ears, toes, nipples, knees, or nose. This happens due to spasms of blood vessels in those areas. The spasms happen in response to cold, stress, or emotional upset.Abnormalities of magnesium metabolism have been reported in people with Raynaud's disease. Symptoms similar to those seen with Raynaud's disease occur in people with magnesium deficiency, probably because a deficiency of this mineral results in spasm of blood vessels. #raynaud #raynauds #raynaudsyndrome #raynaudsdiseaseawareness #raynaudsdisease #raynaudscheck #magnesiumdeficiency #skincare #for #foryou #foryoupage #fyp