My six year old has been frequently going to urinate, sometimes 15 min apart.  I noticed this for the last two months.  He says he feels like he as to go.  Today he has mottled skin, and says it feels like it burns.  It is his trunk, arms, and legs back and front.
Hi...by what you quote I feel that it might be urinary infection or a renal tubular acidosis. I suggest you get the kid evaluated by a pediatrician as soon as possible. Regards -