Most people use caffeine to stimulate their physical and mental performance, but for some people it can cause severe adverse reactions. You may or may not have a caffeine allergy if you develop symptoms after ingesting the substance. In order for...
Headaches from caffeine are a common side effect, but if the headache is from an allergic reaction to the chemical, the head pain may be caused by sinus pressure. A caffeine allergy is different from caffeine intolerance, which can cause similar...
Caffeine may be viewed as an energy source, a drug, or a social beverage. If you are like 90 percent of the American population, then you consume coffee on a regular basis according to nutrition author Daniel M. Korn. This may be in the form of...
Caffeine is a chemical drug that stimulates your nerves and is able to make you more mentally alert. As with any drug, your body may develop an allergic reaction to caffeine when you ingest it. If your body mistakes caffeine as a harmful...
Caffeine is a commonly sought-after drug to enhance mental performance and help you stay awake longer, but for some people, caffeine can trigger adverse reactions. Food allergy symptoms are commonly confused with other gastrointestinal disorders...
Caffeine allergies are uncommon but have similar symptoms to general food allergies. An allergic reaction occurs when a substance triggers an overreaction of the immune system reaction, according to MedlinePlus. Caffeine, commonly found in...
Whey, soy and caffeine allergies are different because different proteins cause a reaction in the body, but are similar in that they are all food-related allergies. Whey and soy allergies are more commonly found in young children and are outgrown...
An allergic reaction to caffeine can cause headaches to develop within minutes of consuming even a small amount of caffeine. While caffeine allergies are uncommon, an allergic reaction can cause minor to life-threatening reactions. If you notice...
When the body's immune system reacts to normal substances, such as tree pollen or cat hair, allergic symptoms develop in the skin, lungs and internal tissues. Although caffeine is found mostly in food products, such as coffee and chocolate, it is...
Allergic reactions can happen to anyone. Most allergic reactions are related to foods, insect bites, medications and airborne allergens, according to Medline Plus, an online resource of the National Institutes of Health. One of the most effective...
Caffeine is a chemical drug found primarily in sodas, tea, coffee and chocolate that can cause an allergic reaction. Any chemical that enters the human body has the potential to trigger an allergy. Some foods and medications more commonly trigger...
Caffeine is the culprit behind coffee allergy signs and symptoms. Caffeine can be found in chocolate, soda, coffee and tea and is a common substance individuals consume on a daily basis. Some people have an allergy to coffee that can be masked...
Itching skin from caffeine sensitivity is most likely caused by an allergic reaction in the body. There's a difference between being sensitive to caffeinated beverages and foods and having an allergy. Itching skin is a sign of an allergic reaction...
Hives from using caffeine are a sign of an allergic reaction. Caffeine is a drug that is commonly found in coffee, sodas, tea, energy drinks and used in combination with other medications, such as pain relievers. Drugs.com states that hives are a...
Caffeine commonly causes side effects, such as nervousness and insomnia, but if you develop extreme symptoms, you may have an allergy to caffeine. Caffeine is a substance that is naturally found in some food products, such as chocolate, coffee and...
If joint inflammation occurs when you consume caffeine, you need to stop ingesting caffeine and call your doctor. Joint inflammation from caffeine is a sign of an allergic reaction that could cause minor to severe reactions. Caffeine is a drug...
Caffeine is the substance at the root of coffee allergies. Coffee allergies can be hard to detect because the stimulating properties of caffeine hide the allergic symptoms. Caffeine is found in a number of beverages such as soda, tea, chocolate,...
Coffee is a beloved beverage for millions but if you constantly have adverse reactions to it, you may have to purge it from your diet. Some people simply suffer from caffeine intolerance. Either you have a coffee or caffeine allergy or your body...
Itching after consuming caffeine is most likely related to an allergic reaction. Skin irritation is one of the first signs of an adverse reaction in your body and needs to be evaluated by a medical doctor. If you develop other symptoms, aside from...
A stuffy nose is not a common side effect of ingesting caffeine. The most common side effects of using caffeine include nausea, increased heart rate, alertness, restlessness and sleeplessness. It is possible to develop a stuffy nose from consuming...
Caffeine is commonly used to help you wake up or provide you with increased energy, but if you develop a swollen neck after consuming the substance you will need to call for medical attention. Neck swelling is the result of an extreme allergic...
Caffeine is commonly found in coffee, soda and energy drinks to help stimulate the mind and promote awareness. Although caffeine may affect your body in various ways, especially if you drink too much, some people are actually allergic to the...
You may not expect to develop rashes from consuming caffeine, but if you're allergic to this substance, you may develop more than one type of rash. Caffeine is found in an array of food products and in some medications. If you develop rashes after...
Caffeine can cause many effects. Some positive effects include better cognitive performance, increased alertness, an improvement in mood and more energy. Unpleasant side effects include a sleep problems, nervousness, increased blood pressure,...
Taking caffeine pills without food may cause upset stomach for some people. Caffeine is a stimulant drug that may cause nausea, stomach bloating and diarrhea in some. Everyone has a different level of tolerance for the drug and it will not cause...
Drinking too much coffee can cause various bowel problems, such as diarrhea, gas and abdominal pain. If you notice that even drinking a small amount of coffee causes bowel problems, you need to talk with your doctor about considering a coffee or...
The United States faces an obesity crisis, but caffeinated beverages such as coffee and soda are popular. It would seem that caffeine -- which elevates the heart rate and gives people a boost of energy -- would help people lose weight. However,...
Caffeine is a common stimulant found in many medications, foods and supplements. While most people can consume small amounts of caffeine without issue, caffeine-sensitive individuals may experience side effects with any amount. Understanding...
Caffeine is actually a drug -- a stimulant, to be exact. It takes about 10 minutes after ingesting it to affect you, and about 12 hours to completely exit your system. Just how stimulating it is depends on several factors such as gender, age,...
