Ringworm goes by several names such as tinea or dermatophytosis. It is a common and contagious skin infection. Despite its name, it is actually caused by fungus names dermatophyte [1]. Shaped like a ring, the rash is usually red and itchy. [2]
From the photo, you may not have a ringworm infection.
I would strongly recommend that you consult a dermatologist first to determine the cause of your rash. There are many factors to why you may get these rashes. A skin fungal scraping may be performed to confirm or exclude a superficial skin fungal infection (i.e. ringworm infection).
References:
1. Fungal Skin Infection: Ringworm (Tinea). Ny.gov. Published 2011. Accessed November 15, 2019.
2. Ringworm. Published 2019. Accessed November 15, 2019.
