Pit Bull skin bump & allergies: Is it a common skin infection?

Unfortunately, we cannot pull up any previous questions so I can't see those.

Pets can get many types of lumps and bumps. Most of these tumors will be benign but some will be malignant and you can't tell by looks. Here is a helpful link discussing the various types of skin masses in general:
https://www.petcoach.co/article/lumps-and-bumps-on-your-pet/

Pets can also get other spots and those spots on Kyro could be several things including allergies, skin mites, flea bites, ringworm (which humans can get) or a bacterial infection.

You can try adding in an omega 3 fatty acid supplement for dogs, this can help improve the skin health. You may also try changing his diet to something like Royal Canin or Nutro as they are aimed at skin health. You can use medicated pet wipes once a day as it may help to condition the skin (don't get any solution in his eyes or ears). Protect the areas from scratching and he may need to wear and Elizabethan collar at all times. If the lesions don't start looking better within about a week or if they get worse, have him examined by the veterinarian who may prescribe medications or aspirate a mass if one is present.

Pits may be prone to skin infections. Also, be advised that any masses that are changing or are reddish colored are suspicious for a skin cancer called Mast Cell tumor.

I hope this helps and please feel free to post any additional questions.