Diseases and Conditions

Know how to prevent, treat and control the symptoms of various diseases and medical conditions. We explain what's happening in your body when disease strikes, and what you can do to feel better faster.

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Shellfish allergies are one of the more common food allergies. Learn whether a shellfish allergy can cause chapped lips in this article.

By HowStuffWorks.com Contributors

Wheat allergies can cause a variety of symptoms. Learn whether wheat allergies can affect your sinuses in this article.

By HowStuffWorks.com Contributors

Wheat allergies cause a variety of symptoms. Learn whether wheat allergies can cause breathing problems in this article.

By HowStuffWorks.com Contributors

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Cat allergies can result in a number of different symptoms. Learn whether cat allergies can cause a rash in this article.

By HowStuffWorks.com Contributors

Dishwashing gloves can inflame a latex allergy if they are made of natural rubber. Find out whether dishwashing gloves can inflame a latex allergy in this article.

By HowStuffWorks.com Contributors

Food allergies can cause acne, among other skin conditions. Find out whether food allergies can cause acne in this article.

By HowStuffWorks.com Contributors

Sore gums can be caused by any number of factors. Learn whether food allergies can cause sore gums in this article.

By HowStuffWorks.com Contributors

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Adults with a beef allergy can generally consume milk and milk products. Learn whether you can have milk if you have a beef allergy from this article.

By HowStuffWorks.com Contributors

Babies are prone to many diaper rashes in the first year or so. Learn whether peanut allergies can cause a diaper rash in infants in this article.

By HowStuffWorks.com Contributors

Shellfish allergies are usually lifelong sensitivities. Learn whether you can have a sudden allergy to shellfish in this article.

By HowStuffWorks.com Contributors

A large number of people are allergic to hair dye. Learn whether you can highlight your hair if you have skin allergies in this article.

By HowStuffWorks.com Contributors

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Some people think that hairless cats don't cause allergic reactions. Learn whether hairless cats cause allergies in this article.

By HowStuffWorks.com Contributors

Gluten can cause skin disorders in people who are allergic. Find out more about how a gluten allergy can affect your skin from this article.

By HowStuffWorks.com Contributors

Wheat and gluten allergies are not the same. Find out more about the differences between wheat and gluten allergies from this article.

By HowStuffWorks.com Contributors

Dizziness is one symptom of a gluten allergy. Find out more about why some people with a gluten allergy suffer from dizziness in this article.

By HowStuffWorks.com Contributors

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Skin allergies occur when you touch a substance you're allergic to. Learn whether you can get a skin allergy from dogs in this article.

By HowStuffWorks.com Contributors

When you think of pet allergies, you probably think of sensitivity to cats and dogs. Learn whether rabbits can cause allergies in this article.

By HowStuffWorks.com Contributors

Shellfish allergies are fairly prevalent among adults. Learn some common symptoms of a shellfish allergy in this article.

By HowStuffWorks.com Contributors

Allergies to shellfish are normally lifelong annoyances once you develop them. Learn what's in shellfish that causes an allergy in this article.

By HowStuffWorks.com Contributors

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As if suffering from an allergy isn't bad enough, many people plagued by allergies also have to sort out lots of conflicting evidence and erroneous advice. To set the record straight, here are some of the most common myths about allergies.

By DiscoveryHealth.com writers

If you have allergies, you probably know that dreaded dust mites live in your mattresses, carpets and rugs. But what kind of vacuum works best to remove these eight-legged intruders?

By Tom Scheve

If you have pets, you're likely to have fur issues. A pet-hair-filled house can be a challenge for any vacuum cleaner -- and not all floor cleaners are created equally. Making the right purchase requires careful consideration of several factors.

By Jennifer Sellers

If you're one of 50 million Americans suffering from allergies, your bedroom may contribute to frequent sniffling and sneezing. Specifically, mattress allergens may be to blame. So what can you do to prevent reactions and get on with your day?

By Maria Trimarchi

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With 200 viruses that can cause a cold and its symptoms -- sneezing, coughing, sore throat and more -- it's no wonder folks will do everything they can to stop sickness in its tracks. But is zinc an effective treatment in beating the common cold?

By Elizabeth Sprouse

Kids and germs seem to go hand in hand. They get the cold from school, pass it on to you and soon the whole household is sick. But it's not inevitable. Here are some ways to lessen your chance of getting that "gift."

By Echo Surina