my son is 6 yrs.old..i identified small brown mole like thing on his leg..it was not there before.. attached pic for reference..could please advice is this concerning

A. This is a natural process if it is not creating any hassle than sometimes more like this can appear on the body over the period so it doesn’t seem like a problem but of course as a mother if You are so concerned about it you can actually have an assessment with your doctor on that