Main
- Allergy — the immune system's reaction to harmless substances: pollen, animal fur, foods, dust and medicines.
- Call an ambulance urgently for difficulty breathing, swelling of the face or neck, severe weakness and loss of consciousness.
- Diagnosis begins with a consultation with a doctor, then skin tests and a blood test for antibodies are used.
- Managed by an allergist-immunologist, and in their absence — by a physician for adults and a paediatrician for children.
- Prevention relies on wet cleaning, washing bed linen in hot water and protective equipment on contact.
What is an allergy
Allergy is an unusual reaction of the immune system to substances that do not cause problems in most people. On contact with such substances, symptoms appear from the skin, respiratory tract, eyes or digestion.
What happens in the body
The human immune system recognises foreign proteins and neutralises them, protecting the body from infections and damage. In allergy, this mechanism fails: a harmless substance that has entered the body is perceived as a serious threat. The immune system produces special protective molecules that remember the encounter with this substance for a long time. On repeated contact, they instantly trigger a chain of reactions and make cells release active compounds. It is these compounds that dilate blood vessels, irritate nerve endings and cause itching, swelling, sneezing or a rash. The allergen itself is not dangerous and does not damage tissues directly, it merely serves as a trigger. The reaction can be noticed by reddening of the skin, a blocked nose, watery eyes or heaviness in the abdomen. If such signs recur after the same contact, it is worth discussing this with a doctor.
What causes it to develop
- Plant pollen: small particles fly through the air during the flowering season and enter the respiratory tract, triggering a reaction in sensitive people.
- House dust and microscopic mites: inhabitants of soft furniture and bedding invisible to the eye leave particles to which the immune system reacts all year round.
- Animal fur and saliva: proteins from the fur, dander and saliva of cats or dogs remain in the air and on surfaces even after cleaning.
- Food products: nuts, milk, eggs, fish and other products can cause a reaction after eating, and sometimes even on simple touch.
- Medicines: some substances in the composition of medications become the cause of a reaction, so it is important to inform the doctor about it in advance.
- Insect bites: venom enters the skin on biting and in sensitive people causes a pronounced response, so such cases require attention.
Who encounters this more often
A tendency to allergic reactions is often inherited, so the risk is higher in people whose close relatives are familiar with it. If the parents have this feature, the child may also develop it, although the specific substance is often different. The environment also contributes to the development of the reaction: life in a large city, an abundance of dust, pets and plants increase the number of contacts with irritants. In children the condition occurs often, and in some of them the manifestations become weaker or change over time. Adults also encounter this, sometimes for the first time — after a change of climate, work or diet. Women seek advice about such reactions more often than men, which is linked both to hormonal background and to greater attentiveness to their condition. Observation by a doctor helps to understand which substances exactly trigger the reaction in a particular person.
What symptoms can occur?
Allergy manifests in different ways depending on which organ reacts to the trigger. It is important to notice the first signs in time and understand when urgent medical help is needed.
How it is noticed at the very beginning
An allergic reaction most often starts with the skin, nose, eyes or airways, and it is easy to mistake it for tiredness or a cold. A person notices itching and redness of the skin, a fine rash or hives that appear for no apparent reason. The nose becomes blocked, sneezing and clear discharge begin, although there is no temperature and the general condition is normal. The eyes become red, itchy and watery, and this becomes more noticeable in bright light. Sometimes a dry cough, wheezing or a feeling of shortness of breath during usual exertion appears. Less often, nausea, abdominal pain or loose stools after eating are troubling. If such signs recur under similar circumstances, it is worth booking a routine appointment with an allergist-immunologist without waiting for deterioration.
Signs that occur most often
- Itching and redness of the skin: a rash or hives appear that itch and interfere with sleep, and scratching increases the irritation.
- Nasal congestion: sneezing and clear discharge without temperature persist for a long time and recur under similar conditions.
- Redness and itching of the eyes: watery eyes and a gritty sensation worsen in light and outdoors during the flowering season.
- Cough and wheezing: a feeling of shortness of breath appears that makes it difficult to speak and move as usual.
- Nausea and abdominal pain: loose stools occur after eating, and this recurs under similar circumstances.
- Swelling of the lips, tongue or face: such a sign requires immediate help, because it can make breathing difficult.
When to seek urgent help
Examinations and tests
An examination for suspected allergy is based on a conversation with the doctor and a gradual clarification of the cause. Below is what stages the diagnosis includes and what each of them shows.
How the examination begins
The examination begins with a detailed conversation with the doctor, not with tests. During the appointment, the doctor asks about the symptoms and their connection with the time of year, food, animals or medicines. Such details help to suggest a possible allergen and narrow the search. The doctor clarifies when the complaints first appeared and how often they recur. Separately, it is established what changed at home and at work before the exacerbation. The medical history and complaints determine which tests make sense in a particular case. Therefore, special tests are selected by the doctor taking into account the complaints and medical history, and not according to a template.
What is prescribed and what it shows
What is worth preparing for the appointment
- Extracts from the medical record: records of past visits show the doctor how the complaints changed over time and what has already been checked.
- Results of past tests: old data on reactions to allergens help to avoid repeating examinations that have already been done without necessity.
- Observation diary: records of symptoms, their time and circumstances give the doctor material for searching for a possible allergen.
- List of contacts: a list of animals, plants, products and places after which complaints appeared narrows the search for the cause.
- Questions for the doctor: clarifications written down in advance help not to forget something important and to understand what to do next based on the results of the appointment.
Which doctor should I see?
If allergy is suspected, an allergist-immunologist provides care, and if one is not available nearby — a physician or paediatrician. Below is an outline of who manages the condition, what happens at an appointment and what areas of care it comprises.
Which specialist manages this condition
An allergist-immunologist deals with conditions related to increased sensitivity of the body to external and internal triggers. If such a doctor is not available nearby, an adult should start with a physician, and a child — with a paediatrician. These specialists carry out an initial examination, take a history of complaints and decide whether a consultation with a specialist is needed. At the first appointment, the allergist-immunologist clarifies when and under what circumstances the symptoms appear, what makes them worse and how long this has been going on. The doctor assesses how the condition affects sleep, work and everyday activities, and whether there is a link with the season, food or contact with animals. Based on the conversation and examination, they determine whether additional assessment by other specialists is required. If a specialist is not available nearby, the physician or paediatrician can provide follow-up and refer to an allergist-immunologist if the condition changes.
What treatment consists of
- Selection of therapy by the doctor: the specialist chooses areas of care taking into account complaints, age and general condition, rather than a single symptom.
- Follow-up and adjustment of treatment: the condition changes over time, so the doctor regularly reviews prescriptions and changes them if necessary.
- Education of the patient and their loved ones: the person and those around them receive clear explanations of how to recognise deterioration and what to do in such cases.
- Allergen-specific therapy when indicated: for certain types of allergy, special therapy is carried out that reduces sensitivity to the causative allergen.
- Non-medication measures: the doctor may recommend limiting contact with the trigger and other measures that complement the main care.
What depends on the patient themselves
The regularity of follow-up with the doctor directly affects how manageable the condition remains. If a person attends appointments at the appointed times, the doctor notices changes in time and adjusts care. When visits are missed, symptoms may worsen unnoticed, and it becomes more difficult to select suitable measures. It is important to tell the doctor accurately what happens between appointments: when the complaints appeared, what preceded them and how long they lasted. Records of such observations help the specialist see patterns that are difficult to recall from memory. The education provided by the doctor also requires participation: loved ones should know how to act if the condition worsens. If something in the prescriptions is unclear or raises doubts, it is better to mention this at the appointment rather than change anything on your own. Calm and consistent following of the doctor's recommendations provides more support than one-off visits at the time of an exacerbation.
What helps prevent an exacerbation?
Allergy prevention is based on reducing contact with known allergens and on regular follow-up with a doctor. It is not always possible to completely exclude encounters with triggers, but thoughtful everyday habits noticeably reduce the frequency and severity of flare-ups.
What is changed in habits
Daily habits directly affect how often allergy flare-ups occur and how severe they are. Damp cleaning in the flat reduces the amount of dust that settles on furniture, windowsills and textiles. Washing bed linen in hot water helps get rid of house dust mites, invisible to the eye. When in contact with allergens at work or in the garden, protective equipment — a mask, gloves, glasses — creates a barrier in the path of the irritant. Ventilation and air purification reduce the concentration of pollen and animal fur in an enclosed room. Refraining from keeping pets in the bedroom reduces night-time contact with fur and saliva. Following the doctor's prescriptions and regular visits to them help notice in time that the condition is changing. If symptoms have become more frequent, it is worth returning to the list of your triggers and checking whether a new source of contact has appeared.
What should be kept under control
- List of triggers: a list of substances and circumstances that cause a reaction helps plan everyday life in advance and avoid encounters with the irritant.
- Action plan: a sequence of steps agreed with the doctor in advance for a flare-up saves you from confusion at the moment of worsening well-being.
- Dustiness of the home: regular damp cleaning and washing of textiles reduce the amount of dust settling on surfaces and in soft furniture.
- Protective equipment: a mask, gloves and glasses when in contact with allergens reduce the irritant getting onto the skin and into the airways.
- Follow-up with a doctor: regular visits allow changes in the course of the condition to be noticed earlier than they become noticeable in everyday life.
How often to see a doctor
Regular check-ups with a doctor are needed even when well-being remains good and there have been no flare-ups for a long time. Allergy can change its course: some triggers become less significant, while others, on the contrary, begin to cause a reaction. The doctor assesses how effectively preventive measures are being followed and whether new circumstances affecting the condition have appeared. At an appointment, it is clarified which situations at home or at work most often precede a worsening. If a person rarely sees a specialist, they may not notice that the usual irritants are acting more strongly than before. An action plan agreed with the doctor helps you not to lose your bearings during a sudden flare-up and to act consistently. Therefore visits should be planned in advance, without waiting for symptoms to become pronounced.
What is worth remembering
Allergy is a condition in which the body reacts to a harmless substance as if it were a danger. What helps to make sense of it is not the search for a guilty product or dust, but a calm conversation with a doctor and observing yourself.
Key takeaways
Allergy does not disappear just because a person has stopped noticing its manifestations, so it is important to honestly track when and after what reactions occur. Noticing the connection can be difficult: the same trigger does not act every time, and similar signs are produced by different conditions. That is precisely why guessing the cause on your own often leads you astray and gets in the way of choosing the right approach. The doctor relies not only on the account but also on the results of examinations, which help to separate allergy from other explanations. It is not worth putting off a visit if reactions recur, intensify, or interfere with sleep, eating and breathing. At the same time, much depends on the person themselves: observations, regular monitoring and reasonable restrictions noticeably reduce the frequency of flare-ups. Allergy is not a sentence and not a reason to give up your usual life, but a reason to build it with your own characteristics in mind.
