Top Causes of Skin Rashes in Florida—And When to See a Dermatologist

Living in Florida means sunshine, beaches, and... skin rashes? Unfortunately, yes. The warm, humid climate of the Sunshine State creates a perfect storm for skin irritation. Whether it’s a sudden red patch or an itchy, uncomfortable rash, knowing what’s behind your skin flare-up can help you get fast, effective relief.

At Dermagnify in Ponte Vedra Beach, Dr. Mark Cappel sees patients every day dealing with frustrating rashes. Here are the most common culprits—and when it’s time to call your dermatologist.

1. Heat Rash (Miliaria)

Florida summers bring intense heat, and with it comes heat rash. This condition occurs when sweat ducts become clogged, trapping sweat beneath the skin. It usually shows up as tiny, itchy red bumps, especially in areas where skin rubs together like the neck, armpits, and thighs.
Who’s most at risk? Kids, athletes, and anyone spending extended time in hot weather.
When to see a dermatologist: If the rash doesn’t go away after cooling down or continues to recur.

2. Insect Bites and Reactions

Mosquitoes, fire ants, and other insects are common in Florida and can cause everything from mild irritation to serious allergic reactions. Some people develop itchy welts or swelling, while others may have more severe responses.
Scratching can lead to infection, so it’s best to keep the area clean and monitor it closely.
See a dermatologist if your bite becomes painful, swollen, develops pus, or if you have signs of an allergic reaction.

3. Contact Dermatitis

This type of rash develops when your skin comes into contact with an irritant or allergen. In Florida, common triggers include poison ivy or oak, sunscreen ingredients, fragrances, cosmetics, insect repellents, and cleaning products.
Symptoms often include redness, itching, blisters, or peeling.
See a dermatologist if the rash spreads, worsens, or doesn’t improve with over-the-counter treatments.

4. Fungal Infections

Warm, moist conditions make Florida an ideal environment for fungal skin infections like ringworm, athlete’s foot, and yeast infections. These rashes may appear as red, scaly patches with well-defined edges, or as itchy, cracked skin in places like the feet or groin.
Don’t self-diagnose—many fungal infections resemble eczema or other skin conditions. A dermatologist can identify the cause and provide targeted treatment.

5. Eczema and Psoriasis Flare-Ups

Chronic skin conditions such as eczema and psoriasis can be triggered or worsened by humidity, heat, and environmental allergens. Florida’s climate may make flare-ups more frequent or severe.
If your rash is painful, oozing, or affecting your quality of life, it’s important to see a dermatologist for effective treatment and long-term management.

Stress-Related Rashes

Stress is a common but often overlooked trigger for rashes. From hives and eczema to rosacea, stress can cause or aggravate skin conditions. If you’ve recently relocated, are facing life changes, or are feeling overwhelmed, your skin may reflect it.

When Should You See a Dermatologist?

While some rashes resolve on their own, others need medical attention. Red flags include:

• Rash that lasts longer than a few days
  
  
• Pain, swelling, or signs of infection (such as pus or fever)
  
  
• Rash that keeps coming back
  
  
• Discomfort that interferes with sleep, work, or daily life
  
  
• Uncertainty about the cause of your rash
  
  

At Dermagnify, we offer thorough evaluations and individualized treatment plans to get to the root of your skin concern and help you feel confident in your skin again.

Expert Skin Care in Ponte Vedra Beach

If you're dealing with a persistent or puzzling rash, don’t wait to get it checked out. Schedule an appointment with Dr. Mark Cappel today.

Call or text us for appointments: 904-842-3632
Email: info@dermagnify.com
Address: 100 Executive Way, Suite 114, Ponte Vedra Beach, FL 32082

Let us help you find relief and restore your skin’s health with expert care tailored to you.