What causes night sweats (spontaneous sweating during sleep) in men?
Aug 11, 2022
Source: Cainiu Health
Dr. Luo Yong
Introduction
For men experiencing excessive night sweats, the first step is to identify potential causes—such as an overly warm sleeping environment, excessive clothing, emotional fluctuations, or changes in body position. Excessive nocturnal sweating in men typically involves generalized sweating and thus falls under the category of generalized hyperhidrosis. This condition may arise from various underlying factors, primarily involving increased sweat secretion by the eccrine glands. Eccrine glands open directly onto the skin surface and are predominantly innervated by cholinergic nerves.
Some men experience excessive night sweats while sleeping. What causes night sweats in men?
What Causes Night Sweats in Men?
Excessive night sweating in men first requires identifying potential contributing factors—such as an overly warm sleeping environment, excessive clothing or bedding, emotional stress, or changes in body position. When men sweat profusely at night across the entire body, this typically falls under the category of generalized hyperhidrosis. It is primarily caused by increased secretion from the eccrine sweat glands, which open directly onto the skin surface and are predominantly innervated by cholinergic nerves.
Secondly, it is essential to determine whether the night sweats stem from underlying medical conditions—for example, infectious febrile illnesses (e.g., malaria, tuberculosis, brucellosis), disorders affecting thermoregulation or autonomic nervous system function, use of antipyretic medications that promote heat dissipation via sweating, or endocrine imbalances such as hyperthyroidism or diabetes mellitus. Additionally, damage to the central nervous system—including the cerebral cortex, basal ganglia, spinal cord, or peripheral nerves—may also lead to generalized sweating. Clinically, night sweats are commonly referred to as “nocturnal diaphoresis” or “night sweats,” and are frequently associated with pulmonary tuberculosis.
Therefore, patients should proactively identify and address potential triggers of night sweats—including environmental, physiological, and psychological factors. Comprehensive internal medicine evaluations—including laboratory tests and imaging studies—are recommended to rule out systemic diseases, establish a definitive diagnosis, and guide appropriate management by relevant specialists. We hope this information is helpful to you!
