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How to Treat 8 Summer Rashes


WHETHER YOU’RE IN the woods wearing your hiking treads thin or on the patio working the Weber, itchy bumps and painful blisters don’t have to wreck your warm-weather plans—as long as you have a plan of attack for getting rid of your gnarly skin infection fast. Enter our guide to all things summer rash-related. Use it to identify and treat skin problems like poison ivy, heat rash, and chigger bites, and fend off future run-ins with redness.

But before you self-diagnose, remember this: While summer rashes can usually be cleared up with an over-the-counter cream, skin infections that come with a fever, headache, shortness of breath, or abdominal pain require a trip to the doc, warns Lewis Nelson, M.D., a New York City-based emergency medicine doctor and medical toxicologist.

Heat Rash (a.k.a. Prickly Heat)

What it looks like: Small zit-like bumps on the back and chest, or deep, painful, acne-like breakouts in more severe cases.

How you get it: In hot, humid weather, excess sweating can clog pores, causing the breakouts.

Treat it: Use an anti-itch cream with a combo of camphor and menthol, like Sarna Original Lotion ($12,, calamine lotion, or 1% hydrocortisone cream to help relieve discomfort. Otherwise, you need to wait for the pores to open up on their own for the rash to go away.

See a doc if: You’re still itching after a week or if the rash doesn’t go away on its own. A physician may prescribe a stronger cortisone cream or an anti-acne medication to exfoliate skin and open pores.

Your best defense: Be mindful when you know you’re going to sweat. Skip heavy moisturizers; pick oil-free, non-comedogenic sunscreen; and wear loose-fitting clothing instead of sweat-trapping spandex.

Swimmer’s Itch

What it looks like: Small, red, and very itchy bumps or blisters that may also burn.

How you get it: Swimmer’s itch is actually an allergic reaction to a parasite found in open water. It burrows into skin and causes an inflammatory reaction.

Treat it: Use anti-itch cream, 1% hydrocortisone cream, or an antihistamine to stop the itch. Colloidal oatmeal or baking soda baths can also soothe skin.

See a doc if: Symptoms don’t disappear after a week.

Your best defense: If you’ve been in infested water, towel off after swimming to decrease your chances of developing the itch.


Poison Ivy, Oak, and SumacWhat it looks like: Tiny fluid-filled blisters in a linear or crisscross pattern.

How you get it: Direct contact with poison ivy, poison oak, or poison sumac. All three plants contain the toxin urushiol, which most people are allergic to. If you’ve been exposed before, you’ll likely notice the rash within 48 hours, but blisters can take up to ten days to appear if it’s your first encounter, says Nelson.

Treat it: For mild cases, OTC calamine lotion should control itching. In more severe cases, use an antihistamine. Go for a topical cream if the rash is contained, and for more spread-out rashes use an oral diphenhydramine, like Benadryl Allergy tablets ($8,, non-drowsy Zyrtec ($27, or Claritin ($20, Still scratching? Hydrocortisone cream packs the strongest punch by reducing the inflammation that’s causing the itch.

See a doc if: The OTC lineup doesn’t kick the itch within a week (the irritation should subside in about three to five days), or if the rash lingers past a couple of weeks.

Your best defense: First off, follow the old adage, “Leaves of three, let it be.” If you suspect you’ve been exposed, wash the area with soap and water within 15 minutes of contact—you may be able to avoid catching a rash. And beware: Clothing, garden tools, or even pets that have been exposed to poison ivy, oak or sumac, can spread the toxin.


What it looks like: Small, itchy bumps and blisters, and hives in severe cases. Your rash will likely be accompanied by a runny nose, itchy throat, and dry, scratchy eyes.

How you get it: A ragweed-triggered rash is an allergic reaction to the pollen in the plant.

Treat it: Oral antihistamines will help relieve itchy skin and irritated eyes, nose, and throat.

See a doc if: Symptoms persist even after on an OTC regimen, or if you develop a fever, shortness of breath, or abdominal pain.

Your best defense: The less pollen you’re exposed to, the better—easier said than done when you’re outdoors during the summer months. If you’re overly sensitive, ask your doctor about cromolyn, a nasal spray that may thwart your over-the-top reaction.

Lyme DiseaseWhat it looks like: A small, red bump that grows into a large, plastic-feeling bull’s-eye after a few days.

How you get it: A tick latches onto your skin and transfers harmful bacteria to you. You’ll notice the bite right away, and the disease can follow.

Treat it: You’ll likely need an antibiotic, which will kill the infection, though the rash may take several days to clear up.

See a doc if: As soon as you suspect you’ve been infected or if you notice a tick, see your doctor. Untreated Lyme disease can lead to serious complications in the heart and joints.

Your best defense: Wear long pants and long sleeves if you plan to be in a wooded area. Also use a DEET-based insect repellent, advises Donald Belsito, M.D., a New York City-based dermatologist. If you find a tick on your skin, remove it soon as possible. (After a tick attaches to your skin, it takes 36 to 48 hours for the insect to infect you.) Use tweezers to grab it as close to the skin’s surface as possible. Be sure to remove the whole tick, and then wash the area thoroughly.

Sun Allergies (a.k.a. Photosensitivities)

What it looks like: A red, scaly, and extremely itchy allergic reaction that’s sometimes accompanied by tiny water blisters.

How you get it: Sun exposure triggers an allergic reaction to certain chemicals, like those founds in medications, in the body. A similar allergy—polymorphous light eruption (PMLE)—is caused by a direct sensitivity to the sun’s UVA rays, and according to dermatologists, your genetics are probably to blame.

Treat it: Oral antihistamines and anti-itch creams will help relieve symptoms, but if you suspect you have a sun allergy, getting the right diagnosis from your doctor can help you avoid the allergy triggers in the future. PMLE may require stronger prescription medication.

See a doc if: Symptoms don’t go away within a week. You likely need a stronger, prescription-strength cream (or for extreme cases, an oral steroid, like prednisone).

Your best defense: Though your doctor or pharmacist should warn you if a prescription drug can cause a sun allergy, keep an eye out for these common culprits: ketoprofen (found in some prescription pain meds) or tetracycline, doxycycline, or minocycline (all found in antibiotics). And, of course, lather on the broad-spectrum SPF.


Athlete’s FootWhat it looks like: Cracking, itching, or skin that looks white, dry, scaly, or pruney.

How you get it: Going barefoot in environments where fungi thrive, like pools, the backyard, or the gym.

Treat it: An OTC antifungal medication, like Micatin ($10,, should tackle the infection within a few weeks. Until it clears, be sure to keep skin dry so fungus doesn’t spread. Also avoid wearing shoes without socks, and try not to wear the same shoes two days in a row, as fungus can get in the lining of shoes and re-infect skin.

See a doc if: Skin hasn’t cleared within three to four weeks, or if you notice symptoms in the nails, too. You may need a prescription-strength medication.

Your best defense: Keep your flip-flops on.


Chigger Bites

What it looks like: Tiny pink or flesh-colored bumps that itch—a lot.

How you get it: Chiggers, small mites that live in tall grass and can latch onto skin, bite and leave behind itchy welts.

Treat it: OTC anti-itch creams and oral antihistamines usually ease symptoms and help bumps to subside in about a week.

See a doc if: If a week goes by and your OTC regimen hasn’t stopped the itch.

Your best defense: Chiggers tend to be most active during the early evening and nighttime hours, so use DEET-based insect repellent if you’re hitting up a backyard barbecue or going for an after-dinner hike.

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