My son was on normal every day diapers (pampers) until he was about 2 months and grew into a new type of diapers, something was different in them or on them, he broke out w/ a rash all around the waste line. Tried Huggies/Luvs and even store brands, same reaction. Then finally tried the "natural" diapers- Earths Best, there's another brand too, and now even huggies has a natural brand. He's been on that type of diaper for the last yr w/ no other issues. A little more expensive, they only carry them at certain places, and they only come in small packages (no bulk). They are thiner, changing every 2 maybe 3hrs, cant go much longer and at night he wears one w/ underware and plastic training pants over it, but that just might be him because I give him so much to drink.
I new cloth wasn't the way for me, so this was a great alturnative.
Good luck