• Home arrow
  • Heat Rash During Pregnancy: Causes, Symptoms and Prevention arrow

In this Article

    Heat Rash During Pregnancy: Causes, Symptoms and Prevention

    Heat Rash During Pregnancy: Causes, Symptoms and Prevention

    Updated on 27 December 2023

    There is no denying that the journey of pregnancy is no less than a metamorphosis for a woman. Her body undergoes a multitude of changes and adapting to these transformations can be challenging. As the mercury rises and your body undergoes remarkable changes, the risk of developing a heat rash during pregnancy increases.

    In this article, we will explore the causes, symptoms, remedies and effective prevention strategies for pregnancy-related heat rash.


    Heat rash, medically known as "miliaria," can be a bothersome skin condition that typically occurs in hot and humid weather. During pregnancy, this condition may be more common due to increased body heat and sweating.

    Recognizing the symptoms of a heat rash is crucial to addressing the issue promptly:

    1. Red Bumps

    One of the primary symptoms is the appearance of small, red bumps on the skin. These bumps can be itchy and uncomfortable.

    2. Prickling Sensation

    Expecting mothers may experience a prickling or tingling sensation in the affected areas.

    3. Increased Sweating

    Heat rash often occurs in areas where sweat becomes trapped under the skin, such as in skin folds.

    4. Irritation

    The rash can be quite irritating and may lead to discomfort or a burning sensation.

    Pregnant women may notice a heat rash in the following areas:

    • The crease between and beneath your breast

    • The crease where the lower abdomen bulge rubs against the top of your pubic area

    • The crease of your elbows

    • On your back, inner thighs or armpits

    You may also like: Inner Thigh Chafing: Causes, Symptoms & Treatment

    What are the Causes of Heat Rash During Pregnancy?

    Understanding the causes of heat rash is essential for effective prevention and management. Here are five common culprits:

    1. Hormonal Changes

    Pregnancy leads to hormonal fluctuations, which can affect the body's ability to sweat and cool down efficiently.

    2. Hot Weather

    High temperatures and humid conditions can exacerbate heat rash, making it more likely to occur during the summer months.

    3. Tight Clothing

    Wearing tight or restrictive clothing can trap sweat against the skin, increasing the risk of heat rash.

    4. Excessive Sweat

    As pregnancy often leads to increased perspiration, the sweat can become trapped in skin folds, creating an ideal environment for heat rash.

    5. Inadequate Ventilation

    Poorly ventilated living spaces or clothing that doesn't breathe can contribute to the development of heat rash.

    You may also like: Sweating During Pregnancy: Causes & Treatment

    How to Manage Pregnancy Rash Caused by Heat?

    If you're experiencing heat rash, there are several ways to manage the discomfort and promote healing:

    1. Keep Cool

    Stay in air-conditioned environments or use fans to maintain a comfortable temperature.

    2. Loose Clothing

    Opt for loose-fitting, breathable clothing to reduce friction and promote ventilation.

    3. Stay Hydrated

    Drink plenty of water to help regulate your body temperature and encourage proper sweating.

    4. Cool Showers

    Take cool showers to soothe your skin and reduce irritation.

    5. Avoid Excessive Heat

    Stay out of direct sunlight and reduce outdoor activities during peak heat hours.

    6. Cornstarch or Oatmeal Powder

    Apply these talc-free powders to keep skin dry and prevent friction.

    7. Gentle Cleansing

    Use mild, fragrance-free soap to avoid further irritation.

    8. Pat, Don't Rub

    When drying off after a shower, gently pat your skin instead of rubbing it.

    9. Avoid Creams and Ointments

    These can trap heat and exacerbate the rash.

    10. Consult Your Doctor

    If the rash during pregnancy persists or worsens, seek guidance from your healthcare provider.

    Other Types of Skin Rashes During Pregnancy

    There are different types of rashes that can occur during pregnancy. While a heat rash appears like pink or red bug-bite-like bumps on your skin, other pregnancy rash can look different.

    1. Hives

    Hives look like raised welt-like bumps on the skin. They tend to appear suddenly and cause itchiness.

    2. Prurigo of pregnancy

    Prurigo look like crusty bumps which often appear on the arms or legs and cause itchiness.

    3. Pruritic urticarial papules and plaques of pregnancy (PUPPP)

    They often look like red, raised skin patches, usually near the stretch marks, on the stomach and can spread to the limbs. It mostly develops in the first pregnancy during the third trimester.

    4. Pemphigoid gestationis

    This is a rare autoimmune skin disorder that can cause a hive-like rash on your midsection. It tends to appear suddenly during the second or third trimester and turns into blisters.

    5. Pustular psoriasis of pregnancy

    This is a severe form of pustular psoriasis that looks like red, inflamed and crusty lesions and appears usually on the thighs or groin.

    6. Pruritic folliculitis

    These are pus-filled lesions resembling acne that can appear on your torso and even spread to the arms, chest and back.

    You may also like: Infections During Pregnancy That Can Harm Your Baby

    How to Prevent a Rash During Pregnancy?

    Prevention is often the best strategy when it comes to pregnancy-related skin rashes. Here are five ways to minimize your risk:

    1. Choose Breathable Fabrics

    Opt for loose, breathable clothing made from natural materials like cotton.

    2. Stay Cool

    Avoid overheating by staying in air-conditioned spaces during hot weather.

    3. Stay Hydrated

    Drink plenty of water to help regulate your body temperature.

    4. Regular Showers

    Taking cool showers can help control body temperature and prevent rashes.

    5. Gentle Skin Care

    Use mild, fragrance-free skincare products to minimize skin irritation and risk of skin rashes during pregnancy.

    You may also like: Skincare During Pregnancy - Tips to Follow

    Final Thoughts

    Pregnancy can be a time of joy and anticipation, but it can also come with various challenges, including skin rashes like heat rash during pregnancy. By understanding the causes, recognizing the symptoms, and following preventive measures, you can minimize the discomfort and enjoy a more comfortable pregnancy journey. If you ever have concerns or if the rash persists or worsens, consult your healthcare provider for guidance and personalized care. Remember, taking care of your skin during pregnancy is an essential part of taking care of yourself and your growing baby.


    1. Guerra KC, Toncar A, Krishnamurthy K. Miliaria. (2023). In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing

    2. Chouk C, Litaiem N. Pruritic Urticarial Papules and Plaques of Pregnancy. (2023). In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing

    Is this helpful?



    Written by

    Anupama Chadha

    Anupama Chadha, born and raised in Delhi is a content writer who has written extensively for industries such as HR, Healthcare, Finance, Retail and Tech.

    Read More

    Get baby's diet chart, and growth tips

    Download Mylo today!
    Download Mylo App


    our most recent articles

    Mylo Logo

    Start Exploring

    About Us

    At Mylo, we help young parents raise happy and healthy families with our innovative new-age solutions:

    • Mylo Care: Effective and science-backed personal care and wellness solutions for a joyful you.
    • Mylo Baby: Science-backed, gentle and effective personal care & hygiene range for your little one.
    • Mylo Community: Trusted and empathetic community of 10mn+ parents and experts.