Conversation: The conversation between human and AI assistant.
[|Human|] My 6yr old son took off his socks after playing in back yard and there are brown spots all over the bottom of his feet.  It almost looks like he got some dirt in his sock or something but the sock is clean.  I tried soaking his feet in vinegar water and then vigorously scrubbing the bottom of his feet but no change. Coloration is similar to a bruise but the random occurrences on both feet make it look like fungal growth... (gross).  He showers regularly, puts on fresh clothes daily.  Any idea what this could be?
[|AI|]  Hello, Welcome and thanks for posting your query to Chat Doctor. After reading your query it appears that your son may have either bruises itself or there is some allergic phenomenon to anything in contact during playing. For the betterment I request you to not wash with vinegar water as can irritate the skin more and also not to rub the area as can lead to further aggravation. You can apply calamine lotion or fluticasone cream over the affected areas and give oral antihistamine if there is itching. Most of the time this kind of rashes disappears itself in a period of 48-72 hours but if these are increasing in number or are deepening in color then you can immediately meet a dermatologist or a pediatrician. With good health wishes.