From the Guidelines
For treating heat rash under the arms, a 1% hydrocortisone cream is the most effective over-the-counter option, as it reduces inflammation and soothes irritated skin. When applying this treatment, ensure the underarm area is clean and completely dry first, as moisture can exacerbate the condition. It is also essential to avoid tight clothing and use powder, like cornstarch, to keep the area dry throughout the day 1.
Heat rash occurs when sweat ducts become blocked, trapping perspiration under the skin, so keeping the area cool and dry is crucial for both treatment and prevention. In addition to using a 1% hydrocortisone cream, applying a thin layer 2-3 times daily until the rash resolves, usually within 3-4 days, can help alleviate symptoms. Some key considerations for managing heat rash include:
- Avoiding extremes of temperature
- Wearing comfortable, breathable clothing, such as cotton
- Keeping the affected area clean and dry
- Avoiding irritant substances that can further irritate the skin
If the rash doesn't improve within a week, shows signs of infection (increased pain, swelling, warmth, or pus), or if you develop fever, it is essential to consult a healthcare provider for further evaluation and treatment. While calamine lotion may also be effective in treating heat rash, the most recent and highest quality evidence supports the use of 1% hydrocortisone cream as the primary treatment option.
From the FDA Drug Label
Uses For temporary relief of itching associated with minor skin irritations, inflammation and rashes due to: ● eczema ● seborrheic dermatitis ● psoriasis ● insect bites ● poison ivy, oak, sumac ● soaps ● detergents ● cosmetics ● jewelry ● external feminine genital and anal itching Purpose Anti-Itch
The best cream for treating heat rash (miliaria) under the arms is hydrocortisone cream. It is used for the temporary relief of itching associated with minor skin irritations and rashes. However, it is essential to note that the FDA drug label does not explicitly mention heat rash or miliaria as an indication for use.
- Key uses: itching associated with minor skin irritations, inflammation, and rashes.
- Important consideration: The drug label warns that other uses of this product should be only under the advice and supervision of a doctor 2.
From the Research
Heat Rash Under Arms Treatment
To treat heat rash under the arms, also known as miliaria, various creams can be used. The best cream for this condition is often a topic of discussion.
- Hydrocortisone Cream: Studies have shown that hydrocortisone cream can be effective in reducing itch and inflammation associated with skin conditions like heat rash 3, 4, 5. However, its effectiveness in specifically treating heat rash under the arms is not directly mentioned in the provided studies.
- Ceramide-Containing Cream: A study found that ceramide-containing cream with 1% pramoxine hydrochloride provided rapid and long-lasting relief of itching in patients with atopic history, including those with active flare 6. This could be a potential option for treating heat rash under the arms, but more specific research is needed.
- Other Options: There are no direct studies provided that compare different creams specifically for the treatment of heat rash under the arms.
Key Considerations
When choosing a cream for heat rash under the arms, consider the following:
- Ingredient: Look for creams with ingredients like hydrocortisone or ceramide, which have been shown to provide relief for skin conditions.
- Concentration: The concentration of the active ingredient can impact the cream's effectiveness.
- Individual Response: What works for one person may not work for another, so it may be necessary to try different options to find the best cream for individual cases of heat rash under the arms.