In epileptic seizures, the child may turn blue, but it will be during or after the seizure and not before. Wetting and soiling are common in epileptic seizures, but are rare with breath holding spells. Breath holding spells only occur when the child is awake and usually when the child is standing.
Without life-sustaining dialysis or a kidney transplant, once a person with kidney disease reaches stage 5 (end stage renal disease or ESRD), toxins build up in the body and death usually comes within a few weeks.
Hope this helps!!