This topic is about dealing with a persistent sore under a convex ostomy pouch. The person experiencing this issue believes that the pressure from the convex appliance might be making the sore worse. They have tried using Band-Aids and stoma powders, but these have not helped much. They are looking for practical advice to help heal the wound.

Here are some helpful tips:

1. Skin Cleansing and Drying Routine
- Clean the skin around the stoma and the sore with plain isopropyl alcohol on cotton balls during each appliance change and several times a day. Make sure to let it air-dry or use a blow-dryer until completely dry before applying any products.
- Use a thin, clean cloth around the damp pouch area to absorb moisture and keep the skin dry.

2. Barrier Protection and Leakage Control
- After drying, apply a protective skin barrier wipe or film before placing the wafer or flange.
- Use an ostomy barrier seal to cushion uneven skin, improve the seal, and reduce leakage that can further damage the skin.

3. Re-evaluate the Convexity of the Pouch
- Deep, stiff convex wafers can create pressure points that may cause or worsen wounds. Consider switching to a softer, moldable convex one-piece pouch instead of a deep, rigid convex.
- Cut the opening slightly larger than the stoma and apply paste around the edge to fill any gaps.

4. Direct Wound Dressings Under the Pouch
- For open, weeping sores, use a collagen-stimulating matrix directly on the sore, then cover with a thin dressing before applying the pouch.
- You can also use an antibacterial dressing for added protection and fluid absorption.

5. Application Techniques
- Warm the pouch wafer with a hair-dryer before placing it so it molds more gently to your body contours. Hold it in place for about a minute to ensure a secure fit.

6. Professional Support
- Consult a wound-ostomy-continence nurse to reassess the stoma site contours, appliance fit, and to get the appropriate advanced dressings.