Inflammation around the mouth, or perioral dermatitis, is a complex skin condition distinct from simple acne or an allergic reaction. What Donguibogam describes as damp-heat and depressed fire can be explained in modern medicine as skin barrier damage, an abnormal immune response, and disruption of the neuro-endocrine-immune axis.
First, impaired skin barrier function plays a central role. Our skin acts as a barrier against external stimuli. However, excessive use of steroid ointments, irritating cosmetics, and even certain ingredients in toothpaste such as fluorine can weaken this barrier. When the barrier is damaged, the skin becomes vulnerable to micro-inflammatory responses, and foreign substances penetrate easily, triggering a red rash and itching.
Second, dysbiosis of the skin microbiome is crucial. Diverse microorganisms coexist on our skin to maintain a healthy state. Yet stress, poor dietary habits, and decreased immunity can cause specific microorganisms, such as demodex or Candida species, to proliferate excessively, worsening inflammation. The concept of damp-heat in Donguibogam metaphorically captures an environment favorable to microbial proliferation, characterized by excess internal heat and accumulated metabolic waste.
Most importantly, there is the link between stress hormones and the immune system. Chronic stress overactivates the sympathetic nerve, increasing the secretion of stress hormones like cortisol. While cortisol appears to suppress inflammation initially, over time it can disrupt the immune system, hinder skin barrier recovery, and aggravate the inflammatory response. The concept of depressed fire in Korean medicine is deeply tied to this state of physical and mental overload brought on by stress.
Recently, research on the gut-brain-skin axis has revealed how gut health affects the skin. Dysbiosis in the gut, such as in leaky gut syndrome, triggers a systemic inflammatory response, and these inflammatory mediators can travel through the bloodstream to the skin, causing various issues including perioral dermatitis. Therefore, resolving perioral troubles requires more than superficial care; a multifaceted approach involving stress management, gut health support, and skin barrier strengthening is essential. The skin reflects internal health, calling for care that nurtures both the inside and the outside.
