The appearance of red dots on the chest requires careful observation of the appearance and self-conscious symptoms of the red dots. If the red dots are distributed unilaterally, arranged in strips, accompanied by obvious pain, numbness, burning and other symptoms, it is considered possible that herpes zoster is caused by infection with the herpes virus, which is an infectious disease, and it is recommended to choose to use oral valacyclovir for treatment. If the red spot on the chest is papule-like changes, you can see white pus head on top of the red spot, accompanied by pressure pain, consider the possibility of folliculitis, it is recommended to choose the external application of mupirocin ointment with oral minocycline, if the red spot is accompanied by obvious itching, symmetrical distribution on both sides, consider the possibility of eczema-like dermatitis, you can choose to use oral loratadine tablets or Epastine, and then topical application of Denide cream or trimethoprim cream.