A lot of small red dots on the legs may be caused by allergic purpura, keratosis pilaris, etc. Patients should consult a doctor in time to clarify the cause of the disease and then treat it.
1. Anaphylactic purpura: Anaphylactic purpura is an allergic inflammatory reaction of the small blood vessels of the whole body, infection, food, drugs and so on can be used as sensitizing factors, and people suffering from this disease will have a lot of small red dots on the legs, and some of them may have arthritis, abdominal pain and other symptoms.
2. Perifollicular keratosis: a chronic follicular keratosis, with autosomal dominant inheritance, vitamin A deficiency, metabolic disorders. Prevalent in the upper arm, thigh extension, can also be seen in the calf, there will be a needle tip to grain size follicular pimples, the skin has a rough feeling.
A lot of small red dots on the legs may also be other diseases, it is recommended to consult a doctor in time to clarify the diagnosis.