Allergy is the response of the human immune system to allergens. Substances that are completely innocuous for the majority, can become deadly for someone, causing various types of allergies.
Respiratory allergy
This type of allergy provoked by small allergens, which are almost always present in the air. It can be:
- pollen of plants;
- wool of various animals;
- particles of mites living in house dust;
- spores of mold fungi.
These allergens affect the system of respiratory organs, causing wheezing, sneezing, discharge from the nose, as well as suffocation. Respiratory allergies can manifest in the form of bronchial asthma, laryngitis, rhinosinusitis, tracheitis, year-round rhinitis and conjunctivitis, accompanied by lacrimation and itchy eyes.
Dermatoses
Cosmetic or medicinal agents, food products and household chemicals can cause a variety of allergies that are manifested on the skin: urticaria, atopic dermatitis, contact dermatitis. There is such an allergy in the form of spots, itching, redness, swelling, and peeling.
Food allergy
Some types of allergies on the hands, face and body are manifested due to eating allergens or when allergy sufferer contacts them during cooking. Appear in humans they are different. On eggs, fish, chicken and other foods, food allergies appear on the skin in the form of rashes, there may also be stomach pain, lower abdominal pain, or nausea.
Injected allergy
Many types of allergies on the face or body occur when contact with insects. Bites of wasps, bees, mosquitoes can cause swelling, reduce pressure, dizziness, urticaria and suffocation. In some cases, such an allergy causes the onset of anaphylactic shock and death is possible.
Medicinal allergy
Allergy in the form of acne, itching, severe skin lesions, asthma attacks and anaphylactic shock can occur on various
Infectious allergy
The human body can respond to non-pathogenic or conditionally pathogenic microbes with allergies in the form of vesicles on the skin, mucous membranes and bronchial asthma. For example, many people in the bronchi "live" microbes of the family Neisseriaceae. In a healthy person, they will not cause any diseases, but they can cause a serious condition in an allergic person.