Red spots on the stomach of AIDS may be lesions caused by dermatitis, erythema multiforme, urticaria, herpes zoster, etc., which need to be examined to determine their specific types. 1. Herpes zoster: it can be erythematous, clustered distribution of papules, with a large range of involvement, manifested by limited reddening of color, limited elevation, and so on. 2. Dermatitis, erythema multiforme: can be red spots or papules, if the range of spots is large, can be united into pieces. 3. Urticaria: at first, it is round or oval, irregularly distributed, and then it can turn into erythema. There is no specific drug treatment for HIV, and it cannot be cured. If HIV infection is found, it is recommended to have blocking treatment as soon as possible and go to the hospital.