An allergic reaction occurs when the immune system becomes overly protective. When something relatively harmless is perceived as a threat, the resulting "defensive attack" can result in a person being burdened with a stuffy nose or a life-threatening anaphylactic shock.
The world of allergies is not just about symptoms. Things become downright bizarre. From the transmission of other allergy and subterranean treatments to incredible things that people just can not handle without hives (or shock), you'll never again see water or Wi-Fi.
10 Many sufferers are not allergic
In 2019, the researchers published the results of an interesting study. It even surprised her. The project involved 40,000 adults from the United States. Tests and questionnaires showed that one in ten had one or more food allergies.
About 19 percent (twice as many) said they had allergies if they did not. This was often the result of self-diagnosis when symptoms appeared after a particular food was consumed.
However, the study showed that these individuals may not be allergic but not food intolerant. Intolerance is essentially the inability of the body to digest a particular meal, and is not life threatening. A true allergic reaction occurs when the immune system measures something as a threat and reacts aggressively, which is life threatening. [19459011
The most unexpected revelations gained by the volunteers (the real sufferers) were How many of them developed their particular problem as adults. In fact, 48 percent only got an allergy when they were all grown up.
9 Hypoallergenic Cat Myth
Life is hard for cat lovers who have to say goodbye to this particular animal because of a cat allergy. Just visiting friends with a cat can cause sneezing, a nosy nose, and itchy eyes, as if there was no tomorrow.
Then came the good news – hypoallergenic kittens. Because of the belief that hair was the problem, breeds such as the Cornish Rex with its short and curly hair were promoted as an allergy-free pet.
The hypoallergenic cat does not exist. Only when researchers can do something against the saliva of cats. The problem is not the fur, but something in their spit.
Cats are the only animals in the world that produce a protein called Fel d 1. If someone says he's allergic to cats, they're actually allergic to that protein. The uniqueness of Fel d 1 is why people do not have severe reactions to other animals. 
The protein occurs in the urine, in the skin and in the saliva of the cat. After a cat has taken care of, the spit dries up and turns into steam. Long-haired cats have more coat and therefore release more air from the air after a good kitty bath.
8 Tick-Induced Meat Allergy
The Lone Tick pervades the United States mainly on the East Coast. When the species bites a human, some people may not enjoy steak anymore. It all starts with a so-called Alpha Gal. This sugar probably ends up in the stomach of the tick after it has sucked blood from an animal.
It is believed that the tick introduces alpha-gal into the person's bloodstream, whereupon the immune system produces antibodies against it. This in itself causes no problems. However, the immune system now has Alpha-Gal on the list of enemies – and red meat contains this sugar.
Those who have never met a single asterisk ticks can safely eat a burger, but their bitten partners see each other within 4-12 6 hours. Unfortunately, this is not a rare disease and the allergic reaction is so severe that it almost resembles the famous dangerous peanut allergy.
There is currently no way to stop a reaction, such as hives, respiratory distress and anaphylactic shock. People with an Alpha-Gal allergy need to have an EpiPen for injection in an emergency. 
7 Exercise Allergy
Couch potatoes are not affected by this danger. However, those who need to love or exercise are at an unusual risk. Around 2 percent of people suffer from an allergic reaction to exercise.
For some reason, physical exertion is a flare on her immune system. It releases antibodies that cause mild to severe symptoms. Those at the lower end develop hives, runny nose and digestive problems. If it becomes more dangerous, the neck can narrow and the blood pressure can drop to the point of circulatory failure. 
Technically referred to as exercise-induced anaphylaxis (EIA), this condition may flare up regardless of the intensity of the exercise. Although many common activities can trigger this weird state, there are, oddly enough, no reports of the EIA through swimming.
The general cause is also unknown, although a subtype has to do with food. This bite is referred to as food-borne exercise-induced anaphylaxis (FDEIA). After eating a certain snack (sometimes at every meal), FDEIA lurks patiently until the person trains and only then reacts.
6 The Treatment of Hookworm
In the 1970s, a parasitologist named Jonathan Turton was tired of his allergies. So he swallowed a hookworm. After living with the parasite for two years, he published the results.
Turton claimed that his hay fever had never flared up at this time. He believed that the worm could protect itself by producing chemicals that repressed its own immune system. This meant that Turton's immune system was unable to overreact to allergens.
Modern researchers agree. Several studies have shown promising results in worms and inflammatory diseases, including Crohn's disease and multiple sclerosis. Since most of the "worm remedies" had already taken place in the shade, the researchers also visited traditional healers, people who had been infected for the treatment of diseases, and worm vendors. 
This unregulated subsoil had some findings, including improved allergies, asthma, Crohn's disease, and inflammatory bowel disease. Hookworm, however, is a serious infection. Safe mainstream use is not possible because doctors are still debating whether it is a true or a placebo effect. If it is real, much research needs to be done to determine the correct treatment and control of parasites.
5 Wi-Fi Lawsuits
Some people claim to have electromagnetic hypersensitivity (EHS). In 2015, a 15-year-old killed himself. Afterwards, her family told the court how the school's Wi-Fi signals had caused them to feel sick and lack concentration, and suffered from debilitating headaches.
The parents of a 12-year-old boy sued his private school and insisted that the facility was new The installed "industrial capacity Wi-Fi" was detrimental. His symptoms included dizziness, skin irritation and nosebleeds. In another case, a French woman won a disability regulation. Although the court acknowledged that her symptoms affected her life, EHS has not fully acknowledged it.
The World Health Organization (WHO) states that this is not a "medical diagnosis". EHS symptoms could mean something. Those affected report general signs of headache, dizziness, rash, and nausea. While the sufferers insist that they feel better by removing electromagnetic signals, they are cautious. [19459011
The study revealed that EHS patients could not tell when the signals were on. The symptoms are not doubtful. The failure to replicate EHS in the lab, however, suggests that a variety of other triggers could be responsible for it.
4 Buckwheat tattoos
Peanut allergy is well known. While most Americans are aware that this could have serious consequences, few know that buckwheat is just as dangerous – anaphylactic shock and all.
The US and Britain are basically free of buckwheat, but Japan is a different story. This cereal is the main ingredient of their popular soba noodles. For this reason, the Japanese are known to be a common food allergen.
In 2017 Japanese restaurant owners wanted to sensitize foreign tourists before their customers could get into trouble with the delicacy. They turned to a dermatologist and an advertising agency. The resulting campaign was quite unique – with a temporary tattoo based on historical Japanese art.
To test whether a person is allergic to buckwheat, the skin is stung before the tattoo is applied with soba noodle broth. Allergies show red skin irritations in transparent image areas. A positive test is scary, but it does kill an anaphylactic shock by ingestion. 
Thanks to the beauty of the tattoos, the fear hardly stops. Even the clear areas should merge the red rash with the art.
3 Aquagenic Urticaria
Without water, life is not possible. Imagine now that you are allergic to water. It may sound like a yarn, but this condition, called aquagent urticaria, is very real. As one of the rarest types, only about 100 cases were registered. In the year 2018, the infant Ivy Angerman was diagnosed with the disease at Minnesota. At the age of 18 months she may be the youngest to ever develop a H 2 0 allergy. Strangely enough, aquagent urticaria has an age-related association. Most patients experience the condition first with the onset of puberty. In Ivy's case, simple things like bath time and sweating can lead to a rapid onset of hives and rash.
This allergy is mysterious. Any type of water can trigger a reaction, regardless of the temperature. Doctors do not know why. Some assume that water is not the culprit, but something in it – perhaps a dissolved chemical like chlorine. Another theory was that the skin itself could produce a substance that turns into an allergy trigger when it comes in contact with H 2 0.  .
2 Post-Orgasm Disease
In 2002, a special condition was recognized. Called Post-Orgasmic Illness Syndrome (POIS), it could be due to a semen allergy. Scientists are not sure of the cause, because the discovery is relatively new, there are few studies and not many men were recited. Researchers suspect that sufferers are allergic to their seeds.
POIS is triggered by ejaculation, followed by flu-like illness (terrible fatigue and weakness). The symptoms occur within seconds or hours and sometimes last up to a week. Some can be scary, such as memory lapses and incoherent speech. Worse, it's a chronic condition. 
Since only about 50 cases are known, the disorder is considered rare. Many other men probably have, but they may be misdiagnosed or do not know that POIS exists.
It does seem, however, that the offending substance could be the cure. One study found that two subjects had fewer symptoms after injections of their own increasingly concentrated sperm. The bad news for POIS hopefuls is that they had to endure this weird treatment for up to 31 months.
1 Allergies can be donated
When a patient receives a transplant, he receives a new organ and a second chance. However, some people get more than they expected – the food allergies of their donors.
In 2018 a woman found this the hard way. All her life she ate nuts without any negative effects. After the 68-year-old had a new lung to treat her emphysema, she felt like a peanut butter-jelly sandwich. Fortunately, she still recovered from the transplant at the hospital, and the doctors were ready when she suffered her first peanut shock.
The event was severe, but it survived. When the doctors checked the donor's background, they found that he used to have a nut allergy. Such donated allergies are rare, but they do occur. There are four or five more cases where lung transplants gave recipients the negative reaction of their donors to nuts.
Lung is not the only organ that can transmit food allergies to a new person. There have been cases of bone marrow, kidney and heart donations. For some reason, liver transplants have a higher risk.