Should a patient with a rash that spreads to other body parts from the buttocks start taking steroids?

Hi doctor,

A rash started at the buttocks, spread to the thighs, and now slowly spreading to other parts like arms, legs, chest, and stomach, but much smaller circles there. In the thigh and buttocks, there is a large patch of circles and rash. Is it inverse pityriasis rosea (Covid rash) or ringworm? All STD or cervical tests came back clear, not responding to fungal treatment (1 to 2 weeks now). The main area is the groin, so I thought yeast or ringworm but then small spots appeared all over my body which is a spreading rash that started after I experienced muscle aches, headache, and chills. A few days after, so I feel maybe it is a Covid rash. Should I switch to a steroid or continue with fungal treatment?

Hello doctor,

Thank you.

There is itching in the groin area. Perhaps, because it is very dry and scaly, as seen in the picture. Almost all the lesions have a scale. It is similar to the scaling seen in the images from the web (red patch with white scaling outline). Almost all patches have it. It seems to be most common in the groin area, with smaller lesions across the body, chest, arm, and neck. The spread made me feel it has to be this as it first started in the primary area groin and then two days after quickly spread in random tiny spots across the body but not as concentrated as the hereditary patch. I am waiting for a skin swab result, but that will take a month due to the delay. That is why I am seeing the solution in the interim. Should I be noticing a difference with the fungal creams? I almost see no change, and I have switched my diet, also. I have been showering with tea tree oil, changing clothing multiple times a day, and keeping the area dry after showering. I also apply two times a day. Should I patch-test the area with a steroid to see if there is an improvement? If it is pityriasis roses, are there any alternative faster tests? Any other medications I can try on spots on the skin? Is potassium hydroxide microscopy different from the skin scraping test of the area?