What is Allergy? What are the symptoms?

Allergy is a common health problem that occurs when the immune system overreacts to substances that are normally harmless.

Uzm. Dr.
Leyla Yağcı Tuncer
Chest Diseases

Publication Date:

16/4/2026 9:35 AM

What Causes Allergies?

Allergy develops as a result of hypersensitivity of the immune system. The most common allergens are: • Pollens• House dust mites• Animal hair• Mold mushrooms• Certain foods (e.g. nuts, milk, eggs) Allergy triggers for each individual may be different.

What Are Allergy Symptoms?

Allergic reactions can occur in different ways. The most common symptoms are: • Runny nose and stuffing• Frequent sneezing• Watering and itching in the eyes• Redness and itching of the skin• Shortness of breath (in some cases) These symptoms are especially common in allergic diseases such as Allergic rhinitis and Urticaria.

What is an antihistamine?

Antihistamine drugs are drugs that reduce or inhibit the effects of histamine secreted during an allergic reaction. Thanks to this, allergy symptoms are controlled and the quality of life is improved.

Antihistamines are particularly effective in relieving symptoms such as: • Runny nose• Itching• Eye watering• Skin reactions.

What Are Antihistamine Drugs Good For?

Allergy is a common health problem that occurs when the immune system overreacts to substances that are normally harmless. Pollen, house dust, animal hair and some foods can trigger allergic reactions. During these reactions, Histamine is secreted in the body and various symptoms appear.

What Are the Types of Antihistamine Drugs?

Antihistamines are divided into two main groups:

1. First Generation Antihistamines: This group of drugs is effective, but it often causes drowsiness. Examples: • Diphenhydramine• Chlorpheniramine• HydroxyIt is preferred for more nighttime use.

2. Second Generation Antihistamines: These drugs, which have fewer side effects, can be easily used during the day.Examples: • Loratadine• Cetirizine• Fexofenadine• Desloratadine affects life less.

How to Use Antihistamine Drugs

The correct use of antihistamine drugs is extremely important for treatment success.Caution should be taken: • It should not be used without a doctor's recommendation• Overdose should be avoided• Regular use may be required• It should not be taken with alcoholEspecially children, the elderly and individuals with chronic diseases should be careful.

Antihistamine medications may have some side effects: • Sleeping• Dizziness • Dry mouth• DistractionSide effects may vary depending on the drug used. In an unexpected situation, a health professional should be consulted.

Other Methods of Allergy Treatment

In addition to antihistamines, the following methods can be applied: • Avoidance of allergens• Nasal sprays• Immunotherapy (allergy vaccine) • Lifestyle changes

Allergy is a condition that reduces the quality of life but can be controlled with the right treatment. Antihistamine drugs play an important role in reducing allergic manifestations.

Table of Contents

Easily Access Our Health Services

Access the healthcare you need with one click. Make an appointment, get your test results or view our doctors.

our doctors

Doctors in our unit

Easily find the doctor who best suits your needs, take a healthy step with expert support.

FAQS

We have put together frequently asked questions so that we can help you better. You can easily find the information you are looking for below

ASDAD

Do you still have something on your mind?

We're here! You can contact us to help you as soon as possible.