Hmm, diaper rash usually causes redness at first more than bumps, kaya baka something else, a few of us moms noticed na heat rash or even small infections can look similar, especially if ang init or kung nag-sweat sya. Best talaga na i-check ng doctor para sure, lalo na may bumps na lumabas sa body din, para malaman kung kailangan lang ng diaper cream or may kailangan pang ibang treatment!