Though they are often mistaken for each other, their root cause and manifestations differ.

On the other hand, eczema is chronic and can last years or even a lifetime.

Both heat rash and eczema can result in bumps and, when scratched, can release fluid.

Woman with itchy rash on arm

Here’s how to tell the difference between eczema and heat rash.

The biggest telltale sign to distinguish heat rash from eczema may be when the itch and irritation occur.

“Heat rashes tend to go away with a change in environment,” dermatologist Ife J. Rodney tellsPrevention.

Woman cooling down with fan and water

Basically, when you cool down, the rash goes away.

The key to preventing heat rash is to avoid overheating.

“With heat rashes, prevention works more than cure,” explains Dr. Rodney.

Woman scratching rash on elbow

Stick to breathable fabrics."

It’s also vital to keep skin moisturized and nourished.

Your doctor can help manage flares by prescribing medication such as antihistamines, steroid creams, and antibiotics.