An allergy occurs due to the imperfections of the immune system – its ability to vary each time own from others. Organism of an allergic person reacts violently to certain substances from our natural environment, which normally are not harmful and which are called “allergens”. Reaction to allergens typically creates inflammation, which causes various symptoms.
What can cause allergy?
The number of allergens is high. The most common are: dust mites, pets (constituents of the skin, hair or secretion glands), pollen, foods (shellfish, peanuts, etc.), Medicines, preservatives, additives in food and drinks, molds, insect venoms etc… Some allergens are more often responsible for allergies than others.
Types of allergy:
1. Food allergies – Mostly often is caused by: milk, eggs, fish, crustaceans, cereals, peanuts, walnuts and strawberries. Symptoms are usually in the form of skin reactions. It often occurs only oral allergy syndrome: a burning sensation or itching of the tongue, swelling of tongue, lips, palate or throat. Regarding the digestive tract, there are cramps, nausea, vomiting and diarrhea.
2. Allergic diseases of respiratory system – The causes are allergens from the environment that we breathe and occur most often in the form of allergic rhinitis and asthma. Depending on the cause may be seasonal (pollen allergies) and full-year (dust mites, pets, mold).
3. Allergies to insect bites – These allergic reactions are usually caused by sting of bee, bumblebees, wasps, hornets and ants. In the case of sting, different localized reactions are comming(swelling, pain, redness), which are from toxic, not from allergic nature. Only in sensitive persons allergic reactions are occurring, in four stages: the first one are hives (urticaria); in the second one the swelling, nausea, vomiting, and diarrhea are occurring; In the third comes to difficulties with breathing and swallowing; and in the fourth is coming even to collapse, hypotension, loss of consciousness, dark-blue skin and mucous membranes.
3. Allergies on medications – Medications that usually cause allergic reactions are acetylsalicylic acid and its related medications which are prescribed for pain or fever, antibiotics (penicillins, cephalosporins, carbapenems), sulfonamides, antituberculosis medications, nitrofurantoin, anticonvulsants, anesthetics etc.
4. Skin allergies – They are manifested in the form of urticaria and angioedema.