Chickenpox with only red spots and unchanged blisters may be caused by the initial stage of the rash or by milder symptoms. Chickenpox is highly contagious and is caused by the varicella zoster virus infection, which manifests itself as red spots, pimples, blisters, and scabs on the surface of the skin. The chickenpox rash is initially a reddish blotchy rash, which turns into a papule after a few hours, and then into a blister after a few more hours. If only red spots do not change blisters, it is possible that the rash has not yet developed to the stage of blisters. If the patient’s resistance is high or the number of infected viruses is low, the symptoms of chickenpox can be more mild, and only red spots without blisters may appear. Chickenpox is highly contagious, must do a good job of isolation during the onset of the disease, if the skin is accompanied by itching, do not scratch with your hands, so as not to scratch secondary infection, which will lead to aggravation of the symptoms of skin lesions or scar formation.