This type of allergy has been reported in medical literature only about 1,000 times since the 1970s. In its mild form, this rare condition may cause hives after exercising, but if one suffers from a severe form of the allergy, physical activity can lead to anaphylaxis, a dangerous condition in which your blood pressure drops suddenly and you have trouble breathing.
This reaction can be triggered by eating certain types of foods before exercising, such as peanuts, shellfish, tomatoes, corn, and wheat. However, anaphylaxis is not necessarily food-related and can also be triggered by humidity, extreme temperatures, and hormonal changes. In any case, sufferers of this allergy must always exercise with a partner, and will often carry an adrenaline shot with them, to be taken in case of an emergency.
For people who are physically allergic to vibrations, also known as vibratory urticaria, any contact with objects like a motorcycle, lawnmower, or a washing machine on full power can lead to an allergic reaction. That might include swelling, itching, headaches, and blurry vision. These symptoms aren’t life-threatening, but they definitely are a nuisance and they can happen several times a day.
Luckily the condition is extremely rare, and a recent study, conducted by the National Institute of Health, uncovered that there is a genetic reason for it. The study is significant because it can be applied to more common allergens as well, such as pollen and different foods.
3. Human Touch
For most people, there is nothing more comforting than a hug. But for people suffering from Dermographism, the situation is a bit different. Dermographism is yet another type of physical urticaria. The name literally translates to ‘skin writing’ because one’s skin becomes so sensitive to touch, they can write their name clearly on their skin with a fingernail.
Approximately five percent of the world population suffers from this condition, but they rarely seek medical help. The rash goes away on its own in 15 to 30 minutes from its appearance, and allergy medication can help ease the itching.
You know that feeling when you come out of a hot shower, and your skin feels scorched and reddish? People suffering from aquatic urticaria, or water allergy, feel that way after every shower. Changing the temperature has no impact, in fact, any contact with water - like getting caught in the rain or breaking a sweat - will cause an allergic outbreak.
In extreme cases, even drinking water can cause rashes around the mouth, inflammation in the throat, and difficulty in swallowing and breathing. Once the body dries, symptoms should fade away in 30 to 60 minutes. There is currently no cure for aquatic urticaria, but antihistamines can help alleviate symptoms, and in severe cases, a shot of adrenaline can be used to reduce swelling and hives.
If you get a rash on your hands from handling loose change, then you are probably allergic to nickel sulfate. People with such an allergy are also advised to stay away from jewelry, hairpins, lighters, and even certain door handles. As you can tell, all of these are very commons everyday objects.
As pestering as that may sound, the best thing sufferers from this allergy can do is avoid the aforementioned shiny items, take antihistamines after exposure, and perhaps apply a topical steroid creme when a rash develops.
Most people know ticks cause Lyme disease, but not many are aware that one certain tick, called the Lone Star tick, is to blame for developing an allergy to red meat. Galactose-alpha-1,3-galactose (alpha-gal) is a carbohydrate found in the cells of many animals that humans eat, like cows and pigs.
Once a tick bites a human after having bitten a mammal with that carbohydrate, the person’s body goes on to develop antibodies in response. Therefore, anytime that person consumed red meat this antibody response is triggered. No one is born with this condition, it can only be developed, and it’s more common in adults than children. Lone Star ticks are most prevalent in the eastern and southeastern United States.
7. Cold Temperature
Cold urticaria is very rare but potentially dangerous, in case a sufferer of the allergy is suddenly exposed to an extreme drop in temperature, for example, diving into icy water. Doctors confirm this uncommon condition by hilding an ice cube on a patient’s skin for several minutes and waiting for a reaction.
Managing this type of allergy mainly consists of prevention - avoiding the exposure of large areas of skin to the cold, and never swimming alone.
People who suffer from electrosensitivity claim they experience headaches, ringing in the ears, fatigue, and more every time they come near electrical fields. This condition is extremely difficult to manage nowadays since electrical fields are generated by cell phones, microwaves, computers, and power lines. Essentially all of the things that surround us and govern our lives daily.
The interesting part is that electrosensitivity is actually a highly controversial topic. Most people who suffer from it are self-diagnosed, and years of controlled studies have come up with no evidence that electromagnetic fields cause these symptoms. The World Health Organization claims electrosensitivity is not a medical diagnosis, despite many individuals fiercely claim the opposite.