What disease is it that causes purple spots on girls’ thighs?

Nowadays, girls are very fond of beauty, and they are particularly strict with their skin and figure. Long legs have become a must-have for women, especially in our country. The whiter the skin of women, the more popular they are. Therefore, long white legs are a beautiful landscape wherever they go. But some women cannot show their legs, not because their skin is not white enough, but because there are always purple spots on them. What kind of disease is this?

Purpura is a disease name in Traditional Chinese Medicine. Also known as purpura, it is characterized by blood overflowing under the skin and mucous membranes, resulting in the appearance of petechiae and ecchymoses that do not fade when pressed. It is one of the common hemorrhagic diseases in children. It is often accompanied by nosebleeds, bleeding from the teeth, and even vomiting blood, blood in the stool, and blood in the urine. This disease belongs to the category of blood syndrome. The diseases and syndromes recorded in ancient Chinese medical books such as "grape plague", "muscle bleeding" and "spot poison" have similarities with this disease. This disease includes allergic purpura and thrombocytopenic purpura in Western medicine. The age of onset of Henoch-Schönlein purpura is mostly 3-14 years old, especially school-age children, more common in males than in females, and more common in spring. The age of onset of thrombocytopenic purpura is mostly 2-5 years old, with no difference in the incidence between boys and girls. The mortality rate is about 1%, and the main cause of death is intracranial hemorrhage.

Relationship with Western Medical Disease Names

This disease includes allergic purpura and thrombocytopenic purpura in Western medicine. Purpura is a general term for color changes in the skin and mucous membranes due to bleeding. The clinical manifestations are petechiae, purpura and ecchymosis, which are generally not higher than the skin surface. Only in allergic purpura can they be slightly raised. They are purple-red at first and do not fade under pressure. Then they gradually become lighter and turn yellow and disappear in about two weeks.

Causes

Purpura is mainly a disease in the blood and can be divided into deficiency and excess. The external cause is the exogenous wind-heat evil, which brings dampness, heat and poison into the blood on the skin surface, forcing the blood to flow abnormally and overflow into the skin pores, mainly manifesting as a positive symptom. The internal cause is insufficient qi and blood in the heart and spleen, deficiency of kidney yin, ascending of virtual fire, and failure of blood to return to the meridians, with deficiency syndrome being the main symptom.

Pathogenesis

Because children's yin and yang are immature, their qi and blood are not sufficient, and their defenses against external diseases are not strong, they are affected by external pathogens of the season, and the six qi are all transformed into fire and accumulated between their skin, fur and muscles. The evil wind-heat fights against the qi and blood, the heat damages the blood vessels, forces the blood to flow abnormally, overflows from the vessels, seeps under the skin, and causes purpura. If the evil is severe, it can also damage the yin meridians, causing blood in the stool, blood in the urine, etc. If blood heat runs rampant and stagnates in the intestinal tract, it can cause severe abdominal pain. If dampness is retained in the joints, local swelling and pain will occur, and flexion and extension will be difficult.

If a child's congenital endowment is insufficient, or the disease prolongs for a long time, it will consume Qi and damage Yin, which may lead to Qi deficiency and Yin damage, and the condition may turn from real to virtual, or even a mixture of real and virtual. If Qi is deficient, it will have no power to control blood, so blood will not flow along the normal path and will overflow outside the vessels. If Yin is deficient and fire is inflamed, blood will move with the fire and seep outside the vessels, both of which can cause recurrent attacks of purpura.