As we age, skin problems of all sizes will appear one after another, and the skin condition of the body will deteriorate. Skin problems may be unavoidable, but the correct understanding and effective prevention and treatment is the attitude and determination we should have. Recently, a nearly 80-year-old woman came to the outpatient clinic. The old lady had a steady pace, but when she rolled up her pants leg, she could find that there were two purple spots on both of her lower limbs, the size of a finger, and clusters of dilated capillaries could be seen around the purple spots. After a brief examination, with experience, Prof. Luo Dan immediately judged that this was senile purpura. After inquiring about the old lady’s medical history, he found that the old lady had been practicing leg press and walking a lot recently. This is undoubtedly not beneficial to the healing of the disease, so what are the causes and mechanisms of this disease? And what are the symptoms and prevention methods? [Etiology] This is a chronic vascular hemorrhagic disease, mostly seen in people over 60 years of age, men and women are common. As the patient’s skin undergoes senile degenerative changes, collagen, elastin gradually decreases, skin elasticity decreases, connective tissue supporting the vessel wall decreases accordingly, and subcutaneous adipose tissue also atrophies and relaxes due to aging, increasing the brittleness of the blood vessels, leading to rupture of the blood vessels, resulting in localized hemorrhage. In addition, due to the higher prevalence of hypertension in the elderly, the consequent vascular sclerosis will also accelerate the increase in vascular fragility, resulting in a relatively higher incidence of senile purpura in elderly hypertensive patients. Nutritional disorders of the skin also contribute to increased vascular fragility. This bleeding tendency is also aggravated by factors such as photochemical effects, chronic liver disease, smoking and alcohol consumption. Main symptoms: Mostly on the face, neck, forearms, back of the hands, calves, etc., irregular in appearance, clear margins, non-punctate, diameter of 1 to 4 cm or so, bright red to dark red, or purplish-red or blackish, hand pressure does not fade, the surface is slightly convex or normal. Purpura color change is very small, over a period of weeks or longer, after the natural subsidence of pigmentation. No mucous membrane bleeding occurs, and there is no systemic symptom or organ bleeding tendency. But it will damage the surrounding skin, making it thin, sparse or lack of hair, capillary dilatation, lack of elasticity of the skin, pressure pulse band test is often positive. Prevention and treatment methods] For this patient, due to old age, the elasticity of blood vessels is already reduced, the brittleness is already elevated; coupled with the fact that she exercises more, the lower limbs of the weight-bearing is too large, which led to the present tension senile purpura. Therefore treatment can be approached from several main angles. First of all, vitamin C and calcium gluconate should be taken to help reduce the permeability of blood vessels; at the same time, vitamin E can be taken to help increase the elasticity of blood vessel walls and improve their firmness. In addition, it is necessary to reduce the length of walking and lower limb training, to avoid excessive weight and pressure on the lower limbs, from the root to reduce the probability of purpura formation. In Chinese medicine, purpura not only involves rupture of blood vessels, but also requires careful handling of the extravasated red blood cells, so appropriate medication to activate blood circulation and remove blood stasis is needed. For patients with high blood pressure, you need to take regular blood pressure medication to avoid blood vessels in too tight state, to prevent the formation of senile purpura.