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Category: Rashes

A Guide to Common Summer Rashes

Updated: April 24, 2026
A Guide to Common Summer Rashes
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Summary

The article provides an overview of common summer rashes, detailing their causes, symptoms, and recommended treatments. It covers heat rash, sunburn, dermatitis from poison ivy, oak, and sumac, swimmer's itch, and insect bites and stings. Each condition is characterized by specific symptoms, such as redness and itching, and the article suggests practical measures for relief, including cooling the affected area and using topical treatments. Readers should consider their individual circumstances and goals when addressing these rashes, as the appropriate response may vary based on the severity and type of rash.

Summer is a time for outdoor adventures, beach days, and sunbathing. However, along with the joys of summer can sometimes come the unexpected rash. The worst part is that you often have no idea where you got it, why it’s happening, or where to start. We are here to help by offering a guide to the most common summer rashes we see as dermatologists.

Heat Rash (Miliaria)

Heat rash typically appears as small, red, itchy bumps on the skin. It occurs when sweat ducts become clogged, trapping sweat beneath the skin. If you believe you have a heat rash, keep the affected area cool and dry. Avoid tight clothing, use lightweight fabrics, and apply soothing creams or ointments containing calamine.

Sunburn

Sunburn presents as red, tender skin that may blister in severe cases and is caused by, you guessed it, the sun! If you forgot to apply and reapply the sunscreen and now have a sunburn, apply cool compresses, moisturize with aloe vera gel, and take over-the-counter pain relievers if needed.

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Poison Ivy, Oak, and Sumac Dermatitis

Redness, itching, and blistering are common symptoms after poison ivy, poison oak, or poison sumac exposure. The rash is caused by an allergic reaction to the oil on their leaves. If you believe you have come in contact with one of these plants, wash the affected area immediately, use over-the-counter creams containing hydrocortisone, and take antihistamines to alleviate itching.

Swimmer's Itch (Cercarial Dermatitis)

Swimmer's itch manifests as red, itchy bumps or blisters and is caused by an allergic reaction to parasites in contaminated water, commonly fresh water like rivers and lakes. If you develop a rash after swimming, rinse off immediately after swimming, apply cool compresses, and use over-the-counter anti-itch creams.

Insect Bites and Stings

Redness, swelling, and itching are common after insect bites or stings. Some individuals develop hive or welt like bumps after being bit by certain insects. If you believe you have an insect bite or sting, clean the area, apply ice packs to reduce swelling, and use over-the-counter creams containing antihistamines or hydrocortisone. If you think the bite is spreading, mark the edges of the bite with a marker to watch for continued growth.

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About Forefront Dermatology

About Forefront Dermatology

At Forefront Dermatology, we believe that healthy, beautiful skin is a reflection of overall well-being. That's why we're committed to providing the highest quality skin and body care, backed by cutting-edge technology and a team of world-class experts. In other words, we're always at the forefront of skin and body healthcare.

Our goal isn't just about how you look on the outside. We aim to transform lives.

By delivering industry-leading skin and body healthcare to more people in more places, we move closer and closer to this goal for thousands of people every day.