If skin in an abdominal fold, under the breasts or in the groin becomes sore during GLP-1 treatment, ask about the rash before buying a skin-tightening product.
What intertrigo means
DermNet uses intertrigo to describe a rash in skin folds. Trapped moisture and friction can contribute, and inflammatory and infectious causes can overlap. It is not a label that tells you which cream to buy. [2]
Write down the location, when it began and what you applied. Mention your GLP-1 and other medicines at the visit. The timing alone does not establish the cause.
Pay attention to drying
Cleveland Clinic's general care advice includes patting affected skin dry with a clean towel, using a fan or hairdryer on a cool setting, and wearing loose, breathable clothing. These measures address moisture and friction; they do not remove excess skin. [3]
Treatment depends on the cause
DermNet notes that clinicians may use a bacterial swab or fungal scraping when investigating a fold rash. Treatment depends on the cause and organisms involved. It cautions against potent steroid creams in folds because they can thin the skin. Ask which treatment fits your diagnosis rather than borrowing a cream prescribed for another site. [2]
When to seek care
Cleveland Clinic advises assessment for a rash that persists or suddenly worsens. It advises seeking care as soon as possible for signs of infection, including pus or a foul smell. If a diagnosed rash is not improving with treatment, contact the treating clinician. [3]
These sources combine US patient guidance with New Zealand dermatology guidance. They do not establish a GLP-1-specific prevention plan or a guaranteed recovery interval. For a separate concern about body shape, see our muscle, food and strength article.
This article provides general education, not a diagnosis or an individual treatment plan. Medication information refers to US sources. Discuss medication, nutrition and cosmetic treatment decisions with qualified clinicians.

Sources
- How can GLP-1 drugs affect my skin, hair, and nails? Updated February 17, 2026American Academy of Dermatology
- IntertrigoDermNet, New Zealand dermatology guidance
- Intertrigo: What Is It, Causes, Symptoms & TreatmentCleveland Clinic, US patient guidance
