What causes vasculitis?

Vasculitis is an inflammation of the blood vessel wall itself and is also a TCM name for phlebitis. Many people do not know what causes vasculitis. There are many reasons that can cause vasculitis, and it has no direct relationship with bacterial infection. This disease is more common in smokers.

1. Fungal infection (20%):

Fungal infection. In addition, after years of clinical observation, many patients had a history of trauma to the affected foot before the onset of the disease, some of which were injured several years ago or even more than 10 years ago. Therefore, it is believed that trauma-induced intravascular congestion and chronic persistent infection are also one of the causes of the disease.

The above factors do not directly cause spasm of small and medium-sized arteries and veins, non-purulent inflammation, and increased blood viscosity, leading to thrombosis and even blood flow occlusion. Extremity blood supply disorders are the main pathogenesis of vasculitis.

2. Smoking (20%):

Nicotinic acid causes vasoconstriction. A large number of studies have shown that smoking can cause vasoconstriction, but it only affects capillaries and has almost no effect on small and medium-sized arteries. Vasculitis is mainly a lesion of small and medium-sized arteries, so smoking is only an external factor after the lesion of small and medium-sized arteries.

3. Low temperature stimulation (20%):

Cold stimulation causes vasospasm.

4. Hormone level disorder (10%):

Hormone level disorders and autonomic nerve damage paralysis can cause vasodilation disorders.

5. TCM believes that the etiology of vasculitis

(1) Invasion of cold and dampness causes stagnation of blood vessels.

(2) Traumatic blood stasis blocks the blood vessels.

(3) Emotional disorders, qi stagnation and blood stasis. The above factors block the meridians, causing poor circulation of Qi and blood, which cannot reach the extremities. The extremities lose the warmth and nourishment of Qi and blood, causing pain, ulceration, and even necrosis, which is the main pathogenesis of gangrene.