Symptoms of erythematous papules include generalized blisters, joint aches and pains, respiratory tract infections, itching, etc. They are lesions caused by vasodilatation of the skin. 1. Generalized blisters: typical iridescent or target-shaped lesions; or large blisters, blood blisters, vesicles all over the body. 2. Joint pain and soreness: weakness of limbs, loss of appetite, patients will show joint pain and soreness. 3. Respiratory tract infection: some are accompanied by upper respiratory system infection with cough and sore throat. 4. Itching: conscious itching, burning, or pain. The appearance of erythematous papules, we should go to the hospital in time, under the guidance of a professional doctor to carry out reasonable treatment, so as not to delay the condition, resulting in adverse consequences, usually pay attention to keep the skin clean, pay attention to personal hygiene.