Red dots on the feet may be related to allergic purpura, athlete’s foot, papular urticaria and so on. 1. Henochromatosis purpura: Increased permeability of the capillaries in the feet due to infection and other factors can cause blood to spill out under the skin mucosa, which can be manifested as small red dots on the feet. 2. Tinea pedis: If the feet are infected by fungus, it can cause the appearance of red pimples in the shape of rice grains between the toes and on the lateral edge of the feet. 3. Papular urticaria: When an allergic reaction occurs after a mosquito bite, red pimples and papules can appear on the feet. It is recommended that people with red dots on the feet go to a regular hospital in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.