Classification methods. Vehicles can be categorized in numerous ways. For example, by means of the body style and the level of commonality in vehicle construction as defined by number of doors and roof treatment (e.g., sedan, convertible, fastback, hatchback) and number of seats that require seat belts to meet safety regulations.
Keeping a diary of food consumed, physical and mental feelings each day, and physical activity will aid in discovering specific reasons for allergic reactions. Caffeine allergy symptoms can be as subtle as tingling in the mouth, itchy skin, and minor swelling of the throat. People who have these reactions every day may not even notice them. Many alternatives are available to replace caffeinated beverages and foods.
Everyone is sensitive to caffeine to one degree or another. The sensitivity to the substance is what causes it to affect the central nervous system, resulting in stimulation. Some people are more sensitive to caffeine than others, but if you develop severe symptoms after consuming the substance, you might have an allergy or consumed too much. Talk with your doctor about which symptoms are normal side effects and which are not.