There are several different kinds of rashes that could appear to be ringworm but turn out to be another condition or ailment. These similar-looking rashes range from less severe to more concerning than a ringworm infection. With that in mind, a rash that appears to be a ringworm infection could actually be Lyme disease, nummular eczema, psoriasis, or a spider bite. In the case of a Lyme disease rash, it has a similar ring-like shape, but it also has a spot in the middle that makes the rash resemble a bullseye. Lyme disease is also a much more concerning condition that has a multitude of harmful effects on your body. Moreover, each of the rashes that resemble ringworm requires different treatments. As such, whether you think your rash is ringworm or not, it is crucial to get it checked out by a verified doctor who can adequately evaluate and diagnose your rash and then prescribe the proper treatment.