Pigmented purpuric dermatoses are a group of capillary inflammatory dermatoses of unknown etiology, generally thought to be associated with lesions of the capillary wall, while elevated venous pressure and gravity have also been suggested as important local triggers. The clinical presentation is characterized by mostly pinpoint red petechiae and hyperpigmentation, and it includes three types of disease: progressive pigmented purpura dermatosis, pigmented purpura tinea-like dermatosis, and capillary dilated cycloplegic purpura. 1, progressive pigmented purpura dermatosis: it is common in adult males. The first is pinpoint petechiae, dense orange-red or brown-red spots, new petechiae occur continuously, scattered at their edges or within the lesions, peppercorn-like dots. They occur on the extensor side of the lower leg, lower shin, around the ankle joint, and on the back of the foot. There is no itching or a slight itch. The lesions expand slowly and last for several months to years. 2, pigmented purpura mossy dermatosis: mostly seen in middle-aged people, more men than women. It is a brownish red or rust colored lichenoid papule with purpuric-like rash that gradually fuses into indistinct patches. It may or may not be itchy. The preferred site is the lower legs, but also occurs on the thighs, buttocks, and lower trunk. 3, capillary dilated annular purpura: this disease is less common, mostly occurs in young people, more women than men. The first is a purple-red annular, semi-annular, or even lamellar capillary dilated rash, 1 to 3cm in diameter, with obvious capillary dilatation at the edge, followed by pinpoint size petechiae and yellow or brown pigmentation within its rash, such as pepper-like scattered. There is usually no itching. It occurs on the extensor side of the calf, but can also occur on the thighs, forearms, buttocks and trunk. The disease is recurrent and can last from 1 year to several years, with a tendency to heal spontaneously. Treatment and conditioning: There is no satisfactory treatment for this group of diseases, but the following methods can be used to slow down the development of the disease. 1, appropriate rest, elevate the affected limbs, avoid prolonged standing and weight-bearing, if there are varicose veins in the lower limbs should be given treatment. 2.You can take vitamin C orally 1 to 2 tablets each time, 3 times a day; vitamin E 1 capsule each time, 2 times a day. 3.Orally take calcium gluconate tablets, 1 to 2 tablets each time, 3 times a day; rutin tablets, 1 to 2 tablets each time, 3 times a day. 4.Local treatment: you can use topical corticosteroid preparations, such as mometasone furoate cream, dinaide cream, tinea cruris-like changes are obvious to do sealing treatment, have certain efficacy. 5.Chinese medicine treatment: You can apply the Chinese medicine treatment that activates blood circulation and removes blood stasis, such as compound Danshen tablets, 5 tablets each time, 3 times a day, orally.