hi. i have read your question and understand your concern. round red lesion can be either eczema or fungal infection. both can also itch. we need to differentiate between the two as the treatment is totally different. i suggest you see your dermatologist and get him examined. in case its difficult to make a clinical diagnosis, your doctor can order a fungal scraping. scraping is a minor test, takes few minutes and will differentiate between the two. till then i suggest you avoid lubriderm, can continue with vaseline. you can also give him cetrizine in case he has itching. hope this helps. for any further questions please get back to us. thanks.