A new ostomy comes with a long list of things people worry about, and the two that matter most are rarely the ones on it. A clinical review of postoperative stoma care puts both in a single sentence: dehydration is the most frequent reason ostomates are readmitted, while irritant dermatitis and other peristomal skin problems are the more common complications overall.
The finding this page is built on Peristomal skin complications — the skin around the stoma becoming red, sore, broken or ulcerated — were reported in between 36.3% and 73.4% of ostomates across 23 studies, and they lengthened hospital stays and raised readmissions within 120 days. Dehydration is separately the single most frequent reason for readmission.
Both are largely preventable, and the same clinical review is blunt about it: a few simple interventions prevent or resolve most common peristomal complications. Nearly all of them come down to the seal — a barrier opening cut to fit the stoma, changed before it leaks rather than after. That is a stoma nurse’s job, not a shopping decision, which is why this page does not try to sell you a solution to it.
Source: Intestinal Stomas: Postoperative Stoma Care and Peristomal Skin Complications, Clinics in Colon and Rectal Surgery (2017), PMID 28684936
On the skin. Output on skin is what damages it, so leaks are not just inconvenient — they are the mechanism. Two things follow. First, a stoma changes shape for weeks after surgery as swelling settles, so the barrier opening that fitted on day three will not fit on day thirty, and re-measuring is a real instruction rather than fussiness. Second, sore skin is a reason to contact your stoma nurse early, because it is much easier to fix at the pink-and-itchy stage than at the broken-and-weeping one. Wound, ostomy and continence nurses exist precisely for this and are free to you in most systems.
On dehydration — and this one is urgent. Your colon’s job was absorbing water. Without it, an ileostomy loses far more fluid and salt, and the small bowel only partly compensates through a process called adaptation that takes weeks to months. Some people never adapt well and run high output from the start. The warning signs are worth memorising before you need them: output that is suddenly much higher or much more watery, thirst, dark or scanty urine, dizziness on standing, headache, cramps or unusual drowsiness. These are reasons to ring your stoma nurse or surgical team the same day, and to seek urgent care if you cannot keep fluids down. Do not wait for a scheduled appointment and do not try to work out from a website whether your output counts as high — your team can tell you what your own numbers should be.
