Rash under the breast – causes and methods of treatment

Health Tips

Prickly heat

It is an irritating and itchy small red rash or cluster of pimples that results from the combined effects of heat, sweat, and skin rubbing against clothing. Miliaria can be caused by heat and humidity, intense physical activity, temperature, and wearing airtight clothing. With prickly heat, the ducts of the sweat glands are clogged, and sweat, accumulating, causes a rash. Cold compresses and cool showers, as well as sedative and, in some cases, corticosteroid creams, can be used to relieve symptoms of prickly heat. It is also very important to wear comfortable “breathable clothing”, preferably cotton and linen.

allergic eczema

Allergic eczema or atopic dermatitis is a chronic condition characterized by dry, cracked, scaly skin accompanied by redness and itching. Although eczema most often appears on the folds of the arms, legs, and neck, it is also often seen in the area under the breasts. The causes of eczema can be very different, from changing seasons to allergies to powder and soap. Stress and food allergies can also trigger this ailment. To treat eczema, dermatologists recommend using moisturizers, antihistamines, and, if necessary, topical corticosteroids. In some cases, light therapy can be a good helper in the treatment of eczema. And of course, if possible, it is necessary to exclude all the factors that initially provoked its appearance.


Urticaria appears as an itchy, red or flesh-colored rash that can appear almost anywhere on the skin, including under the breasts. Urticaria is very often the result of an allergic reaction, the cause of which is very problematic to determine, especially if the rash lasts less than 6 weeks. Urticaria can be triggered by medications, including antibiotics, food allergies, respiratory infections, insect bites, stress, high blood pressure, sun exposure, and more. Antihistamines are usually prescribed to treat hives. However, to prevent this disease, it is best to contact an allergist to determine individual risk factors.

contact dermatitis

Contact dermatitis is a type of eczema that appears as a red, dry rash that makes the skin slightly swollen and itchy. As a rule, this rash occurs when the skin comes into contact with an irritant or substance, which, due to the individual characteristics of each person, can cause an allergic reaction. From the moment of contact with the allergen and before the onset of symptoms, it can take a matter of minutes or days. The most common triggers for allergic contact dermatitis are shower gels, shampoos, soaps, laundry detergents, cosmetics, and even jewelry. This list also includes detergents, bleach, disinfectants, as well as various fertilizers and pesticides. Treatment for contact dermatitis depends on the symptoms that caused it, but most often includes topical and internal corticosteroids.

Inverse psoriasis

Inverse psoriasis, also called skin fold psoriasis, usually spreads in places where the skin sweats and rubs heavily, including under the breasts. Damage is expressed in the form of bright red, smooth spots, slightly elevated above the surface. You can also observe small cracks in the skin along the border of the damaged surface. Without proper care, these lesions can cause a secondary infection, usually fungal, to attach to psoriasis. Therefore, the course of psoriasis should not be left to chance and self-medicate. The sooner you seek help from a doctor, the more effective the treatment will be. For skinfold psoriasis, corticosteroid creams, tar-based ointments, calcineurin inhibitors, and topical vitamin D may be prescribed. All these drugs have a number of side effects, so the treatment of inverse psoriasis should be under the supervision of a physician.


Hyperhidrosis is a condition caused by excessive sweating. Excess sweat attracts infection-causing bacteria, which in turn, when in contact with moisture under the skin folds, cause a rash. For the treatment of hyperhidrosis, special antiperspirants for skin folds are used, in some cases prescription. In particularly severe cases, a dermatologist may recommend Botox injections.


This disease is caused by the same yeast fungus as thrush, candidal stomatitis and diaper dermatitis. Candida yeast thrives in warm and humid environments. Therefore, the areas of the body under the breasts are one of the most favorable places for the reproduction of this fungus, which is manifested by reddening of the skin, itching, rash, bubble pimples or small cracks in the skin. As a treatment for such a rash, antifungal drugs are used for both external and internal use.

Papular urticaria of pregnancy

Hormonal changes, weight gain, increased sweating, and a number of other factors can cause breakouts under the breasts during pregnancy. However, one of the most common causes of a rash during this period is papular urticaria, which causes discomfort to every hundredth pregnant woman. As a rule, it begins on the abdomen and then spreads to the arms, buttocks and chest, often accompanied by severe itching. This rash usually occurs towards the end of pregnancy and goes away almost immediately after delivery. Relief from papular urticaria in pregnancy comes with antihistamines and topical corticosteroids, which should only be taken with a doctor’s prescription. From natural remedies, cold oatmeal compresses are suitable to relieve itching.

Prurigo pregnant

Pruritus of pregnancy is characterized by the formation of reddish, intensely itchy, “scaly” spots, usually on stretch marks. Pruritus is essentially a type of eczema – atopic dermatitis, and can form in typical areas characteristic of eczema – on the folds of the arms and legs and, of course, under the breasts. This rash usually occurs during the second trimester and the last weeks of pregnancy. Pruritus is thought to be caused by pregnancy-related changes in the immune system. After childbirth, it tends to spread throughout the body, but after about three weeks it disappears on its own. However, if you want to get rid of pruritus during pregnancy, you can use phototherapy and taking antihistamines, which should be taken strictly according to the doctor’s prescription.

Contacting a doctor

In most cases, a rash under the breast is very harmless. However, if you experience any of the following symptoms, you should seek professional medical attention immediately:

  • The rash becomes extremely painful
  • After a few days of home treatment, there is no improvement.
  • The rash transformed into non-healing open sores.
  • You suffer from chronic diseases and impaired immune system.
  • You have a fever, nausea, or vomiting.

Universal Tips for Relieving Symptoms

  • Try to go without a bra as often as possible until the rash has completely disappeared. Especially avoid underwired bras. If you still cannot do without a bra, try to wash it as often as possible, using a powder for sensitive skin.
  • Try to wear loose fitting clothing made from breathable fabrics such as cotton or linen.
  • Use unscented soaps, lotions and creams
  • Cool the affected area as often as possible with a cool compress.
  • Do not use new body care products until the rash has completely disappeared.

Photo: Vostock-photo

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