Locations:
Search IconSearch

What Is Sun Poisoning?

This ‘poisoning’ is actually a severe sunburn that seems similar to an allergic reaction

Person with sunburn, sweating, with dizzy stars around head

If you have sun poisoning, you may feel that familiar tenderness you associate with the average sunburn — the red shoulder or thigh that momentarily turns white when you press a finger against it.

Advertisement

Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy

But then, things take a turn for the worse after a few hours. You develop a blistering rash that itches and burns like mad. You start getting the chills and/or extremely thirsty. You might even experience nausea.

Sun poisoning may not be exactly what you think it is, but it’s certainly a cause for concern.

What is sun poisoning?

Even though “sun poisoning” isn’t a formal medical term, we’ve all heard of it. Family medicine doctor Matthew Goldman, MD, says it often mimics a flu bug or allergic reaction.

As a result, you can find yourself shivering in bed with a headache, fever and chills — all wrapped up with the redness, pain and sensitivity of a sun-scorched skin patch.

Sun poisoning symptoms

Depending on the severity, sun poisoning can cause a range of symptoms. Common signs of sun poisoning may include:

When you have sun poisoning, you’re not actually poisoned by UV (ultraviolet) rays. What you’re experiencing is intense pain and other reactions from the damage dealt to your skin. If you’re experiencing sickness, nausea, dizzying or general illness, chances are, this is a result of being severely dehydrated.

Advertisement

If you experience any of these symptoms, you should drink plenty of water and electrolytes to keep yourself hydrated and clear-minded.

So, how long does sun poisoning last? The pain and skin healing can continue for a few weeks, depending on the severity of the burn. If you scratch or pick at the burn, you run the risk of getting an infection. If you notice any bleeding or oozing, you should see a doctor immediately because it could be a sign of infection.

Who’s most at risk?

There are a lot of possible causes for sun poisoning and, in some cases, it has no known cause. Sun poisoning is more likely to occur in some people than others, such as:

  • People with fair skin
  • People who have a family history of skin cancer
  • People who live near the equator and receive more intense sun exposure

Certain pre-existing conditions, medications and/or chemical exposure may predispose someone to sun poisoning. This can include:

  • Lupus
  • Certain antibiotics
  • Topical medications
  • Contact with certain plants, like parsnips

Sun poisoning treatment options

Treatment for sun poisoning can include:

“Sun poisoning affects people differently, so doctors tend to focus treatment on a person’s specific symptoms,” clarifies Dr. Goldman.

How to prevent sun poisoning

To prevent sun poisoning, you want to take the same precautions that help you avoid sunburn. Here are some important tips to follow the next time you’re exposed to the sun:

  • Use sunscreen. Use broad-spectrum (UVA and UVB) sunscreens with a sun protection factor (SPF) of at least 30. Apply this 15 to 30 minutes before sun exposure and reapply at least every two hours. And avoid tanning beds.
  • Wear sun-protective clothing. Look for UPF (ultraviolet protection factor) clothing. Options include long sleeves, sunglasses, gloves and broad-brim hats. Tightly woven fabrics, thick and/or dark-colored clothing are also useful for protection.
  • Avoid peak hours in the summer months. This means staying out of the sun for extended periods of time between 10 a.m. and 4 p.m.
  • Limit time outside. And if you’re outside, try to find a shady area, like under a tree or inside a pavilion. It’s especially important for you to keep infants younger than 6 months out of direct sunlight.
  • Be aware of medication side effects. Certain medications like nonsteroidal anti-inflammatory drugs (NSAIDs), diuretics and acne medication may cause photosensitivity.

Bottom line?

It can be easy to spend too much time out in the sun and wind up with a bad sunburn that may appear to be sun poisoning.

Advertisement

“If you have symptoms of sun poisoning, it’s important to see your medical provider,” stresses Dr. Goldman. “After examining you, they can determine the severity of the problem, as well as the best treatment.”

Advertisement

Learn more about our editorial process.

Related Articles

Person on the beach in the sun, sun burnt
May 22, 2025/Skin Care & Beauty
Are Sunburns and Sun Poisoning the Same?

A sunburn will leave you itchy and red, while sun poisoning can feel like an allergic reaction

Person with a bad sunburn on parts of their body while at the beach
May 21, 2025/Skin Care & Beauty
8 Hot Tips for Sunburn Relief

A cool shower, aloe vera gel, anti-itch treatments and cool compresses can provide fast sunburn relief

Beach chair on sunny beach, with umbrella and bottles of SPF
May 20, 2025/Skin Care & Beauty
What the SPF in Your Sunscreen Means

SPF stands for ‘sun protection factor’ — it’s a measure of how much protection you’re getting before a sunburn is possible

Person on track holding bottle of sunscreen, reapplying it
March 25, 2025/Skin Care & Beauty
How Often Should You Reapply Sunscreen?

When outside, protect your skin from damaging UV rays with a fresh layer of sunscreen at least once every two hours

Hand squeezing sunscreen from a tube into other hand
March 24, 2025/Skin Care & Beauty
Can Sunscreen Cause an Allergic Reaction?

Chemicals, fragrances and other ingredients in sunscreen can cause allergic reactions or irritate your skin

Tube of sunblock and tube of sunscreen in the sand on a beach
March 21, 2025/Skin Care & Beauty
Sunblock vs. Sunscreen: What’s the Difference?

Both can protect you from the sun’s rays, but they do it in different ways

A person at the beach with sunburnt shoulders and pale lines where the bathing suit straps were
March 14, 2025/Skin Care & Beauty
A Sunburn May Turn Into a Tan — but Both Are Damaging

Your skin tone determines if a sunburn becomes a suntan

Person wearing big floppy hat on the beach, applying sunscreen to their shoulder
March 11, 2025/Skin Care & Beauty
How Sunscreen Affects Tanning

You can still get a tan (a sign of skin damage) while wearing sunscreen

Trending Topics

Person in bed sleeping on their side, covers off
Breathing Problems? Try These Sleep Positions

If you’re feeling short of breath, sleep can be tough — propping yourself up or sleeping on your side may help

A couple looking at skyline, with one person slightly behind the other, head bent down
What Is Anxious Attachment Style — and Do You Have It?

If you fear the unknown or find yourself needing reassurance often, you may identify with this attachment style

Glasses and bottle of yellow-colored prebiotic soda, with mint, lemon and ginger garnish
Are Prebiotic Sodas Good for You?

If you’re looking to boost your gut health, it’s better to get fiber from whole foods

Ad