Rashes

A rash can show up suddenly or develop slowly over time, causing discomfort, itching, or irritation. While many rashes are temporary and harmless, others can signal underlying conditions that require medical care. At Dermatology of Miami, board-certified dermatologist George Glinos, MD, along with Bethany Aguilar, PA-C, Yesenia Sebastia, APRN-BC, and Alexandra Riguero, PA-C, diagnose and treat a wide range of skin rashes from their offices in Miami and Miami Lakes, Florida. If you're unsure what's causing your rash or want relief from uncomfortable symptoms, call Dermatology of Miami or schedule an appointment online today.

What is a rash?

A rash is a visible change in the skin’s texture or color and often appears as redness, bumps, flaking, or irritation. Some rashes develop quickly, while others persist or come and go in cycles. Rashes can appear anywhere on the body and may be triggered by an allergic reaction, infection, autoimmune condition, or irritant like a new skin care product or detergent.

The symptoms and appearance of a rash can vary widely—some are itchy, while others burn or feel painful to the touch. Because many skin conditions look similar, an accurate diagnosis is essential for effective treatment.

What causes rashes?

Rashes can develop for a number of reasons. Common causes include:

• Contact dermatitis: A reaction to an irritant (like soap or detergent) or allergen (like poison ivy or nickel)
• Eczema (atopic dermatitis): A chronic condition that leads to dry, itchy, inflamed skin
• Psoriasis: An autoimmune disease that causes thick, scaly patches of skin
• Fungal infections: Like ringworm or athlete’s foot, which can cause red, itchy patches
• Viral infections: Such as shingles or viral exanthems in children
• Heat rash: Caused by blocked sweat glands in hot or humid environments
• Medication reactions: Some medications may cause skin eruptions or hives as side effects
  

Stress, illness, and seasonal changes can also trigger or worsen skin rashes in certain individuals.

How is a rash diagnosed and treated?

At Dermatology of Miami, your provider will begin with a comprehensive skin exam and ask about your symptoms, health history, and any recent exposures. In some cases, additional testing—like a skin scraping, biopsy, or allergy test—may be needed to determine the cause.

Treatment depends on the specific diagnosis, but may include:

• Topical corticosteroids or antihistamines to reduce inflammation and itching
• Antifungal or antibiotic creams for infections
• Oral medications for more severe or widespread reactions
• Lifestyle recommendations to avoid known triggers

When should I see a dermatologist about a rash?

You should seek care if your rash:

• Lasts more than a few days
• Spreads rapidly or becomes painful
• Blisters, oozes, or becomes infected
• Is accompanied by fever or other symptoms
  

Persistent or recurring rashes can interfere with your quality of life. To get a diagnosis and relief, call Dermatology of Miami or book an appointment online today.