Red dots on the skin, to be specifically analyzed, the patient may be the occurrence of red pigmented nevus, which is in fact a very normal phenomenon, does not need to come to treatment, only need to closely observe is enough. There are also patients in the skin appear needle tip-like size, fine presence of red points, in fact, is the occurrence of vascular nevus, is caused by the expansion of local capillaries, also do not need to come to the treatment. There are also patients with red dots on the skin, is the occurrence of allergic purpura, patients with double lower limbs as the first symptomatic manifestation, allergic purpura suggests that there should be like calcium gluconate, vitamin C, loratadine, cetirizine and other drugs to carry out an anti-allergic treatment, can be effectively relieved, and at the same time, to be good bed rest. Other patients who have red dots on the skin may have nodular polyarteritis, which needs to be controlled with cytotoxic drugs like methotrexate, cyclophosphamide, or traditional Chinese medicine. Therefore, if you are not sure of the cause of the red dots on the skin, you should go to the dermatology department of a regular hospital for consultation before treatment.