Sudden appearance of clear-brown spots on a 3 y old boy

3 year old boy with sudden clear-brown spots
especially in his buttocks around 4 or 5 round coin sized spots, 2 on his right foot, one on his left arm and two bigger ones just where the kidneys are is like drawing where they are, no symptoms, just there, Doctor thought they were fungus but after 4 days with the treatment is not working, everything still the same....What can it be? I don know if I should worry or not :(. Please help!

Thanks

[Bhupinder Kaur, MD]

Hello,
From the symptoms it can be dermatitis skin, contact dermatitis, granuloma annulare or nummular eczema. Nummular eczema also presents as itchy, red, dry circular lesions.
If the symptoms are severe then please get an evaluation done from a dermatologist because it is better to confirm a diagnosis rather than try medications.
I hope it helps. Take care and regards.