It is during the secondary stage of syphilis that a rash on the stomach can form. It is also seen on the hands and feet. It appears as rough red or brown raised bumps on the skin. Bacterial rashes ...

They can be especially itchy, red, inflamed ... Hives are a common skin rash that can occur on the stomach. Symptoms include bumps, redness, and itchiness. Many cases of hives on the stomach ...