Pictures of stomach rashes can be found on online sources like the American Academy of Dermatology, Mayo Clinic and SkinSight. There are many different types of rashes, which can include allergic contact dermatitis, folliculitis and pityriasis rosea, that may develop on the stomach, as well as other body parts.
Pityriasis rosea is a skin rash that develops in a patch-like pattern on the stomach, back or chest area, explains the Mayo Clinic. This rash can be itchy, but it will get better on its own in a matter of 6 to 8 weeks, specifies the American Academy of Dermatology. Some other types of rashes that can affect people are shingles, heat rash and hives.