Even mild dehydration after a strenuous workout, not drinking enough water, or too much alcohol or caffeine can leave you feeling a bit dizzy and weak, and head rush is a common side effect. The less fluid in your body, the less there is to manufacture blood, and your blood volume will decrease.

Any spinal cord injury that affects the nerves, or a hormonal imbalance that affects blood pressure, can interrupt blood flow and cause head rush. Your circulatory system is complex and interdependent, so damage or dysfunction in one area can cause a range of symptoms all over. Many chronic conditions can damage blood vessels or interfere with their function, including: Head rush may be traced to the nerves in the blood vessels, the flexibility of their walls, and their general health. If they’re not in good working order, your blood pressure will suffer. Since blood vessels act as corridors for oxygenated blood, the way they constrict or dilate will determine how blood moves through the body and feeds the cells. In some cases, the treatment you take for a different ailment could bring on the characteristic drop in blood pressure. Disorders That May Cause Orthostatic HypotensionĪ head rush isn’t a disorder in its own right, but it can be a symptom of another condition. If you’re unable to counteract the natural drop in blood pressure, less blood will reach your brain, and that can bring on a bout of dizziness, light-headedness, blurry vision, or even fainting. Head rush happens when your body cannot respond to your change from a horizontal to a vertical position fast or well enough. This neurological event is so quick and automatic, you likely never notice it at all. Autoimmune disease.But standing up is a necessary and frequent task, so your body has built-in mechanisms to counteract that drop in blood pressure: the brain quickly tells the blood vessels to narrow and the heart to pump harder in order to move the blood up the body faster. Diabetes - a major risk factor for kidney disease. 2014 9(3):289-294.Ĭenters for Disease Control and Prevention. Peripheral nervous system manifestations in systemic autoimmune diseases. doi:10.1001/jamapsychiatry.2013.1111Ĭojocaru IM, Cojocaru M, Silosi I, Vrabie CD. Autoimmune diseases and severe infections as risk factors for mood disorders: a nationwide study. doi:10.14740/jocmr2122wīenros ME, Waltoft BL, Nordentoft M, et al. The increased cardiovascular risk in patients affected by autoimmune diseases: review of the various manifestations. Vitiligo: signs and symptoms.ĭurante A, Bronzato S. Symptoms and causes of ulcerative colitis.Īmerican Academy of Dermatology Association. What is type 1 diabetes?Ĭenters for Disease Control and Prevention. Lupus symptoms.Ĭenters for Disease Control and Prevention. Systemic scleroderma.Ĭenters for Disease Control and Prevention. National Organization for Rare Disorders. Pulmonary sarcoidosis.Īmerican College of Rheumatology. Symptoms & causes of primary biliary cholangitis (primary biliary cirrhosis).Ĭenters for Disease Control and Prevention. Multiple sclerosis: frequently asked questions. Definition and facts for crohn's disease. Symptoms and causes of autoimmune hepatitis.

A diagnostic approach to autoimmune disorders: clinical manifestations: part 1. What are common symptoms of autoimmune disease? Regulation of inflammation in autoimmune disease.

Upper chest discomfort and rash