Allergies Medical Reference

All you need to know about hay fever symptoms and treatment.

Many things can make babies and toddlers cough, sneeze, or have hives. Find out about the most common types of childhood allergies and how to spot the warning signs.

Find out what tests your doctor uses to diagnose an allergy.

Do some antibiotics give you a rash or hives? If they’re sulfa drugs, you could have a sulfa allergy. Here’s what you need to know.

Any furry pet can bring on an allergic reaction. Here's what you can do to keep your symptoms in check.

Corn allergies are rare compared to other food allergies. Find out about symptoms, substitutions, and how to avoid serious reactions.

Do your allergies bother you when you’re at work? Get solutions.

A serious allergy can cause anaphylactic shock within 15 minutes. Know the symptoms and what to do.

Find out about these hives you get from heat, sweat, or exercise. Learn more about causes, treatments, and prevention tips for them.

Eosinophils are specialized white blood cells that curb infection and boost inflammation. If you have too many, it’s called eosinophilia. Learn how EOS blood tests can help diagnose allergic reactions, certain kinds of infections, and some other rare conditions.

Find out how this food allergy that happens in kids differs from other food allergies and how to avoid or treat it.

If you have a hole in your septum, also called a nasal tear, there are great treatment options.

What are the causes, symptoms, and treatments of postnasal drip.

I have a deviated septum. Is surgery the best solution?

Sinus infections, also known as sinusitis, can be hard to distinguish from other respiratory ailments. Learn about the symptoms, causes, and treatments of sinusitis.

Peanut allergy has become one of the most common causes of severe allergy attack, and cases are on the rise. Learn how to spot the signs and get treatment quickly to avoid serious consequences.

If you were having an allergic reaction, would you know it?

If you need antibiotics, penicillin allergy can make a big difference in what drug you get. Find out about symptoms, how you get tested and what your options are if you're allergic.

Is it a cold or sinusitis? How can you be sure?

How to recognize anaphylaxis and get help.

Histamines: What they do, and how they can overreact.

A pollen allergy is one of the most common causes of allergies. Discover types (such as grass allergies), prevention tips, and more.

Discover the various types of skin allergies and their common triggers. Learn about the causes and preventive measures to keep your skin healthy and irritation-free.

There are a lot of similarities, but also some key differences in symptoms. Find out how to tell them apart.

An allergic reaction after you drink alcohol doesn’t mean you are allergic to alcohol. Here’s what’s going on.

Urticaria pigmentosa is a rash, most common in children and young adults, characterized by reddish-brown, gray, or purple lesions. Learn about its causes, symptoms, diagnosis, treatment, and more.

When you have allergies, even getting a little exercise outdoors can be a challenge. So before you head outside to get your sweat on, follow these tips to make your workout less itchy and sniffly.

Mast cell activation syndrome is when mast cells release inappropriate amounts of chemicals. Learn about the causes, symptoms, and treatment options for this condition today.

Alternative methods to relieve allergy symptoms.

Learn more about medications to ease your pollen allergy symptoms.

Find out about the latest research that's testing new ways to treat food allergies.

Your allergy season depends on where you live and what triggers your allergies. WebMD explains.

Eczema and allergies often go together. Here's what you need to know about the connection between the two and how to reduce symptoms.

Get tips about how to stay safe if you have a food allergy.

If you have a wheat allergy, there are substitute ingredients you can use for wheat in recipes and in your diet. WebMD explains.

Get tips that can help keep your child safe if he has a food allergy.

If you have a soy allergy, there are substitute ingredients for soy in many recipes. WebMD explains.

Have a nut allergy and crave something crunchy? WebMD tells you what you may be able to tolerate instead.

Allergies can show up on your child's skin. Here's what to look for if you think your child has a skin allergy.

Some allergy medications are off-limits when you have high blood pressure (aka hypertension). Find out which allergy drugs are OK.

Is a child more likely to have allergies if one or both parents has allergies too?

Think you have an indoor allergy? Here's a look at allergy symptoms, allergy triggers, and what you should do.

These five strategies can help you know if you truly have a food allergy and how to handle it.

Some allergy drugs seem safe for pregnant women. But you need to be cautious about using any medicine during pregnancy.

Tree pollen is a common allergy trigger. WebMD explains which trees cause the most problems and how you can keep your tree pollen allergy symptoms under control.

What you need to know if this is one of your triggers.

Do scents set off a round of sneezing and sniffling? Get tips on how to avoid allergy symptoms when you smell the fragrance from soaps, candles, perfume, and more.

Is your child sneezing and sniffling during allergy season? Find out how to know if allergy tests are the right thing for him.

If your allergies flare in late summer or early fall, you may be allergic to ragweed. Here's information about symptoms, treatment, and how you can avoid your triggers.

Find out how to avoid the ingredients that set off your food allergy when you go to a restaurant.