Sweating Heavily Whenever You Eat? Is Gustatory Hyperhidrosis Normal or a Disease?

The stomach heat described in the Donguibogam can be explained in modern medicine as gustatory hyperhidrosis. This is a phenomenon in which specific stimuli during food intake unexpectedly stimulate the sweat glands as well as the salivary glands, causing excessive sweating on the face, forehead, and around the nose. Sweat secretion in the body is primarily regulated by the autonomic nervous system. Gustatory hyperhidrosis is known to be closely related to a subtle imbalance between the sympathetic nerve and parasympathetic nerve, or a malfunction within the neural circuit. The sensations of chewing or tasting food, particularly spicy flavors, sour tastes, and hot temperatures, are transmitted to the brain. When these signals extend beyond the normal digestive and salivation pathways and connect with the nerve pathways that govern facial sweat glands, they trigger sweating. It functions much like crossed wires delivering an incorrect signal. This phenomenon may appear more commonly in the presence of an underlying disease such as stroke, diabetic neuropathy, postherpetic neuralgia, or certain surgeries such as salivary gland surgery. In these instances, it is classified as secondary gustatory hyperhidrosis. However, cases of primary gustatory hyperhidrosis, which occur without any specific cause, are also common. According to research, patients with gustatory hyperhidrosis are reported to have sweat glands that are more reactive to the neurotransmitter acetylcholine, or a lower threshold for nerve response to stimuli, compared to the general population. Sweat that occurs severely in the specific context of meals, rather than for simple thermoregulation, can cause significant daily inconvenience and psychological distress. Modern medicine seeks to understand these complex interactions within the nervous system deeply. Beyond simple symptom relief, it explores ways to reduce discomfort by identifying root causes, improving lifestyle habits, and applying professional treatment when necessary. It is important to pay close attention to the signals the body sends and respond appropriately.