Overview

Hematidrosis, or bloody sweat, is characterized by the presence of blood in sweat. Although severe cases can look like a horror movie, it typically presents as sweat with a red tinge. It most commonly affects the face and scalp, but hematidrosis in the hands is also commonly reported.

Causes

The exact cause of hematidrosis is still unclear, but the leading theory is based on the body's response to stress, particularly stress associated with fear and/or anxiety. It is believed that under intense psychological pressure, the blood vessels around the sweat glands overly construct, which leads them to rupture thereby allowing blood to enter the sweat ducts.

Treatment

Stress management is typically the best way to manage hematidrosis. Beta blockers (e.g., propranolol) may be considered because they help control the body's stress response.