Black spots on a cat's body may indicate folliculitis, typically appearing on the chin, nose, and base of the tail. Some cats may also experience accompanying symptoms such as odor and hair loss. In such cases, prompt veterinary attention is necessary. If the cat also experiences itching, frequent rubbing against furniture, and redness and swelling around the black spots, it likely has ringworm. 
Black spots on a cat's body may indicate ringworm. Early symptoms of ringworm in cats include black spots on the skin, sometimes accompanied by gray scales and localized hair loss. The cat will be in pain, experiencing intense itching all over its body, and will often try to relieve it by rubbing against walls or its owner, making it relatively easy to identify. If the black spots become red, swollen, or develop pus, it indicates a more serious condition and requires immediate veterinary attention. At the same time, it's important to maintain a clean and disinfected living environment for the cat, thoroughly sun-drying its bedding and other items to kill bacteria. Supplementing the cat's diet with vitamins, lysine, and protein can help boost its immunity.