Management of Peristomal Rash – Evidence‑Based Recommendations

Initial Assessment & Leakage Prevention

Address appliance leakage as the most common cause of peristomal skin damage; correcting leakage precedes any specific rash treatment. 1
The majority of peristomal skin problems arise from effluent leaking around the pouch and causing chemical irritation. [1][2]
Ensure the peristomal skin is completely dry before applying a new pouching system. [3][4]5
Cut the appliance opening approximately one‑eighth inch larger than the stoma to avoid mucosal irritation while limiting skin exposure to effluent. [6][3]
Apply a fine stomal powder to any denuded or irritated skin, then cover with a skin‑sealant before pouch placement. [3][5]4
When the stoma sits flush with the skin, use convex appliances, ostomy belts, paste, or barrier rings to improve seal. 6
Warm the appliance with a hair dryer before placement and remain supine for several minutes afterward to enhance adhesion. [3][4]

Presents with itching and erythema that exactly mirrors the shape of the offending product (adhesive, barrier, or accessory). [1][2]7
Management:
- Apply a skin‑sealant for mild irritation. [1][6]
- Switch to a different pouching system to eliminate the allergen. [1][2]
- Use a short course of topical steroid spray if symptoms are pronounced. [1][2]7

Appears as an itchy maculopapular rash with satellite lesions, typically developing from prolonged moisture and heat under the pouch. [1][2][7][5]
Management:
- Sprinkle antifungal powder directly onto the affected area. [1][2][7][5]8
- Seal the powder with a skin‑sealant to prevent displacement. [1][2][7][5]
- If no improvement after 2 weeks, refer to a surgeon or enterostomal therapist for further evaluation. [1][2][7][5][8][4]

May develop from irritation of hair follicles surrounding the stoma. [1][2]
Management: maintain proper skin hygiene and trim (do not shave) peristomal hair as needed.

Characterized by painful ulcers with a violaceous halo, especially in patients with inflammatory bowel disease; requires urgent assessment. [1][2][7][5][8][4]
Treatment: initiate systemic immunosuppressive therapy rather than solely local wound care.

Do not ignore rashes persisting beyond 2 weeks; they may indicate pyoderma gangrenosum and need specialist evaluation, particularly in IBD patients. [1][2]7
Do not apply topical agents before correcting the underlying leakage; ongoing effluent contact prevents healing. [1][2]6
Avoid cutting the appliance opening excessively large, as this increases skin exposure to effluent and worsens chemical dermatitis. [6][3]
Measure stoma size at each pouch change for the first 8 weeks post‑operatively, since the stoma typically shrinks during this period. [6][3][5][4]

Refer to an enterostomal therapist or surgeon if a fungal rash does not improve after 2 weeks of antifungal powder treatment. [1][2][7][5]
Refer urgently for painful ulcers with a purple halo suggestive of pyoderma gangrenosum. [1][2][7][5]8
Refer when persistent leakage remains despite multiple pouching system modifications. [1][2]