Small red dots on the legs are not HFMD. Hand, foot and mouth disease is characterized as occurring in children. Hand, foot and mouth disease is a red, blistered papule that appears on the palms of the hands and soles of the feet, and the small red dots that appear on the legs should not be hand, foot and mouth disease. Usually, there are two kinds of small red dots on the legs, one is allergic purpura can appear small red dots, and the other is dermatitis eczema can also appear small red dots. Red dots are allergic purpura if they are a bleeding rash and congested rash is eczema or dermatitis. To diagnose whether it is allergic purpura or dermatitis, you need to go to the hospital for an examination and use medication under the guidance of your doctor. If it is allergic purpura, it is an inflammation of blood vessels and is treated by anti-inflammatory and with antihistamines. In addition, allergic purpura can not over exercise, avoid standing for a long time, sufficient rest can relieve the purpura. Allergic purpura can cause purpura nephritis if aggravated, must pay attention, and also allergic purpura, can also cause abdominal purpura, that is, abdominal pain symptoms. If small red dots appear on the legs, accompanied by abdominal pain, it is important to pay attention. If the aggravation is not treated, it can cause allergic purpura nephritis, accumulate kidney, appear protein urine, hematuria and so on, it is very serious, must pay attention, can not ignore the small red dots, timely go to the hospital treatment.