Allergies are more common than ever before, affecting millions of people around the world. While many of us are familiar with common allergens such as pollen and dust, there are some strange and surprising allergens that you may have never heard of.

In this article, we’ll explore 5 of the strangest allergens you never knew existed.

1. Sunlight

Yes, you read that right – there are actually people who are allergic to sunlight. This condition is known as solar urticaria and can cause symptoms such as hives, swelling, and itching when the skin is exposed to sunlight.

Some people with this allergy may also experience headaches, nausea, and difficulty breathing.

2. Semen

Believe it or not, there are people who are allergic to semen. This condition is known as seminal plasma hypersensitivity and can cause symptoms such as itching, burning, and swelling in the genital area after sexual intercourse.

Some people with this allergy may also experience stomach cramps, diarrhea, and difficulty breathing.

3. Exercise

Yes, exercise can actually be an allergen for some people. This condition is known as exercise-induced anaphylaxis and can cause symptoms such as hives, breathing difficulties, and even loss of consciousness during or after physical exertion.

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The cause of this allergy is not yet fully understood, but it is thought to be related to a combination of exercise and certain foods or medications.

4. Vibration

Believe it or not, some people are actually allergic to vibration.

This condition is known as vibratory urticaria and can cause symptoms such as hives, itching, and swelling when the skin is exposed to vibrations from things like power tools, car rides, or even cell phone use. Some people with this allergy may also experience difficulty breathing, stomach cramps, and dizziness.

5. Cold Temperatures

Finally, there are people who are allergic to cold temperatures. This condition is known as cold urticaria and can cause symptoms such as hives, swelling, and itching when the skin is exposed to cold temperatures.

Some people with this allergy may also experience difficulty breathing and even a drop in blood pressure when exposed to cold temperatures.

Conclusion

While these strange allergens may sound like something out of a science fiction novel, they are very real for the people who suffer from them.

It’s important to remember that allergies can develop to just about anything and it’s always a good idea to seek medical attention if you suspect you may be allergic to something.