Anhidrosis

Anhidrosis (also known as anhidrosis ) refers to reduced or absent sweating. Sweating is an important function of the body to release excess heat and regulate body temperature. In anhidrosis, sweat production can be completely or partially restricted, which leads to problems with thermoregulation.

Possible causes

Damage or malfunction of the sweat glands: For example, due to burns or scarring (scar tissue has no or very few intact sweat glands).
Neurological disorders: Disorders in the nerves that supply the sweat glands (e.g. in diabetes, autoimmune diseases, injuries).
Skin diseases: Some skin diseases can block or destroy the sweat glands (e.g. scleroderma).
Medication: Certain active ingredients (e.g. anticholinergics) can inhibit sweat secretion.
Genetic factors: In rare cases, congenital anomalies in which the development of sweat glands is impaired.

Symptoms and risks

Overheating of the body: As sweating is the main mechanism for regulating heat, those affected can quickly overheat at higher temperatures (hyperthermia).
Heat exhaustion and even heat stroke: Dizziness, nausea, headaches and, in severe cases, loss of consciousness can occur.
Dry skin: As there is no sweat production, the skin can become dry or cracked.

Treatment

Treatment of causes: If there is an underlying disease (e.g. diabetes, thyroid disease) or side effect of medication, the aim is to treat or adjust it.
Precautionary measures: In warm weather or during physical exertion, those affected should ensure adequate cooling (e.g. cool environment, sufficient fluid intake, light clothing, special cooling vests if necessary).
Physical measures: Cool baths, cold compresses or fans can help to keep the body temperature down.

Important: If you notice an unusual reduction in perspiration or symptoms such as severe sensitivity to heat and overheating with minimal physical activity, it is advisable to seek medical advice to determine the cause and avoid possible consequential damage.