濕疹

濕疹，中醫稱為濕瘡，是一種過敏性炎症性皮膚病。濕疹可分為急性、亞急性和慢性三類。

1. 急性濕疹

主要表現急性發病，常見於頭面、耳後、四肢等部位，主要症狀為瘙癢性紅疹、水皰，嚴重的甚至皮膚糜爛、流滋。

2. 亞急性濕疹

多為急性濕疹處理不當，或未能及時治療，令病程遷延所致，以脫屑、結痂為主，僅有輕度糜爛。

3. 慢性濕疹

由於急性濕疹和亞急性濕疹長期不癒，或反覆發作而成，也可一開始即呈現慢性濕疹。其表現為皮膚肥厚粗糙，觸之較硬、色暗，常伴有乾燥脫屑甚至皸裂。

病因

急性濕疹多有水皰糜爛，因此中醫認為此乃濕熱之邪所致，治療以清熱祛濕為主。

亞急性濕疹除了濕熱之邪外，因病情遷延日久，會損及脾胃，因此治療除了利濕外，還著重健脾。

慢性濕疹則為血虛所致，血虛則皮膚失去濡養而出現皮膚乾燥，因此治療時以養血祛風為主。

Eczema is an allergic inflammation kind of skin disease, it has 3 categories: acute, subacute and chronic.

Acute eczema is common in the head, face, ears and limbs. Manifestations are mainly itchy rashes and blisters. Skin erosion and exudation occur in serious cases. From TCM perspective, this is caused by damp heat evil, treatment to dispel the heat and dampness will bring back a healthy balance to the body.

Subacute eczema is usually the result of improper or untimely treatment of acute eczema, thus extending the course of the disease. Manifestation is less serious, mainly scaling and scab, with mild skin erosion. Besides dispelling dampness and heat, treatment will aim at strengthening the spleen, as the prolonged disease will hurt the digestive system.

Chronic eczema may happen at the first time or after repeated attacks. Manifestations in the skin are mainly rough and thick, dry and hard, scaly or chapped, color darkened. Deficiency of blood is the fundamental cause. By nourishing the skin from the inside, the skin condition will gradually revive.