Retracted Stoma, Frequent Leaks, and Satellite Lesions

Two diagnoses are coexisting, and treating only one will fail:

• Irritant contact dermatitis from effluent - bright erythema in a ring with a relatively sharp border, worst where the leak pools, burning.
• Cutaneous candidiasis - satellite papules and pustules extending beyond the erythematous ring, itching, in a warm occluded space under a pouch, in a patient on prednisone.

Also worth naming: allergic contact dermatitis (would follow the adhesive footprint rather than the effluent pattern), pyoderma gangrenosum (violaceous, exquisitely painful, enlarging), and bacterial folliculitis.

Prednisone changes three things. It raises his risk of candidiasis and bacterial superinfection; it thins the skin so aggressive adhesive removal and deep convexity cause injury; and it slows healing, so I will not give a topical plan a month to prove itself. I would use an antifungal powder, not a cream - creams leave a film the flange will not stick to - dust it on, seal with a barrier film, then pouch. If satellite lesions persist at 1–2 weeks, ask the prescriber about oral fluconazole. I would also check his glucose, because steroid-induced hyperglycemia feeds candidiasis.

Name the drivers of the leak: retraction plus a crease plus a bulge. The stoma sits 1 cm below skin level, so effluent pools at the skin surface; the crease gives it a channel; the cough-induced bulge suggests a parastomal hernia that changes shape and defeats a flat flange. Five changes in two days is itself injuring the skin.

1. Convexity matched to depth - light convexity, one-piece or a two-piece with a convex insert. Deep convexity on steroid-thinned skin risks pressure ulceration at the rim.
2. Fill the crease with a cohesive seal or a thin strip, not a mound of paste: paste contains alcohol, stings denuded skin, and dissolves.
3. Belt - convexity only works when pulled down by a belt; without one it floats.
4. The 3 mm separation is clean and not necrotic: keep it clean and dry, fill with stoma powder, allow secondary intention healing, and make sure the convexity does not bear directly on it. If it does, reduce the convexity.
5. Measure and cut to the stoma each time; the opening should clear the stoma by 1–2 mm, no more.
6. Support garment if the hernia is confirmed, with referral for assessment.
7. Reassess in 48–72 hours, not a week - leak frequency is the danger signal.

Teaching: empty when the pouch is one-third full; change every 2–3 days rather than daily, since frequent changes strip skin; warm the flange before applying; rinse away soap residue and dry fully; inspect the skin with a mirror at every change; report any change in stoma size or shape, because a shrinking stoma silently changes the fit.

Change course if:

• The mucocutaneous separation deepens, becomes necrotic, or drains pus - surgical review.
• The skin worsens despite correct technique or has not improved in 1–2 weeks - consider patch testing or biopsy for pyoderma gangrenosum.
• The bulge becomes irreducible, tender, or is accompanied by cramping and no output - obstruction or strangulation, urgent evaluation.
• The stoma retracts further or the convexity starts leaving a ring mark, which signals pressure injury.

Document stoma measurements and baseline photographs if the institution permits, so improvement is measured rather than impressionistic - and so the next clinician inherits data, not a description.