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Adrenaline is one of the body's most important stress chemicals. It is secreted from the adrenal glands, which sit atop each kidney. Adrenaline also plays a key role as a neurotransmitter that facilitates communication between brain cells, or neurons, and other cells. An adrenaline rush is a sudden increased secretion of adrenaline from the adrenal glands. It causes an increase in heart rate and respiration. Adrenaline rushes can be healthy responses to actual threats to a person's well-being or symptoms of an underlying mental disorder.
Several hormone disorders can cause night sweating. Pheochromocytoma is a rare adrenal gland tumor that produces norepinephrine and epinephrine. These hormones control blood pressure and heart rate, so increased production can cause increased heart rate, high blood pressure and night sweating.Hyperthyroidism, which is also known as overactive thyroid, can cause night sweats because too much thyroid hormone is produced by the thyroid gland.he Mayo Clinic cites autonomic neuropathy and stroke can cause night sweating. Stroke can occur as the result of a burst blood vessel or a blood clot blocking the flow of blood to the brain. Autonomic neuropathy is a set of symptoms that occur when the nerves are damaged.