Underboob Bra Rash Intertrigo - What Causes It?

February 08, 2018


Having hundreds of customers over the years who have struggled with breast sweat and rashes, I wanted to share my knowledge about what causes breast rashes.

What is intertrigo?

It is a rash that occurs between skin folds. In this example, it occurs between the breasts and the ribcage area.

What causes underboob rash?

Most often, underboob rash is caused by having excess heat, moisture, and lack of breathability, or air flow, under the breasts. This environment is an ideal breeding ground for bacterial, fungal, and yeast infections.  

What are breast rash risk factors?

Some of the risk factors include being overweight, wearing wet clothes for long periods of time, having diabetes, and excessive sweating.

What are breast rash symptoms?

I know how uncomfortable some of the symptoms can be. They include:

  • A red rash
  • Raw, sensitive skin
  • Feeling itchy
  • Flaky or cracked skin skin
  • An unpleasant odor

What are solutions for breast rashes?

In my next blog post, I will discuss the strategies on how to get rid of breast rashes.

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Size Chart

Step 1 of 3) Read the title/description of the BreastNest you’re choosing to make sure you fit within its cup size range. Example: “Breeze D to DD Cup” fits a D and DD.

Step 2 of 3) With a flexible measuring tape, measure around your ribcage directly up and UNDER your breasts, making sure there's no slack behind your back.

Step 3 of 3) Based on your ribcage measurement, choose the Size below that fits within the range of the Band Size.

Size Band Size
Medium 28-33 in.
Large 34-38 in.
X-Large 39-41 in.
XX-Large 42-50 in.
XXX-Large 51-54 in.
XXXX-Large* 55-61 in.


*XXXX-Large only comes in Breeze Original and Camisole Original