Quincke's edema: outpatient care

Angioedema (other names: Quincke's edema, giant urticaria, acute angioedema) is trophoneurotic edema. The disease may be hereditary or acquired. It is characterized by the appearance of swelling of the subcutaneous fatty tissue and deep layers of the skin, including the mucous membranes of all organs and systems (digestive, respiratory, urinary, etc.). Angioedema may disappear within 72 hours.

The disease can have a hereditary form (about 25% of all cases). The idiopathic variant occurs in approximately 30%: in this case, it is not always possible to establish the true cause of the disease. In all remaining cases, Quincke's edema occurs with drug allergies, insect bites, food allergies, helminths and protozoa, autoimmune diseases and blood diseases.

In some cases, swelling is also called huge urticaria. According to statistics, Quincke's edema occurs in both adults and children, but in most cases the disease occurs in women at a young age. It is observed less frequently in older people and children. This problem occurs at least once in a lifetime in 10% of the population.

When a specific allergen enters the body, a strong allergic reaction occurs, in response to which Quincke's edema and other allergic diseases develop. Concomitant diseases may be bronchial asthma, food allergies, and the causes may be urticaria or hay fever, if they are not treated at the proper level.

In patients with pseudoallergic edema, the body can react quickly to the compliment system - in response to chemical or thermal irritations, which leads to the development of an allergic reaction of the body as a whole. In this case, consultation with an allergist will help make the correct diagnosis and decide on treatment.

How are angioedema classified?

Angioedema is divided into subgroups:

Based on the clinical picture:

The course of the disease has: an acute period, which lasts up to 6 weeks, and a chronic period - more than 6 weeks;
The disease can be combined with urticaria, or it can be isolated.

Various development mechanisms:

It can be hereditary or acquired.

Hereditary angioedema is always isolated and comes in three types:

Type 1 – there is an absolute deficiency of the C1 inhibitor;
Type 2 – there is a relative deficiency of the inhibitor in the body;
Type 3 – no lack of inhibitor.

Acquired edema:

Acquired C1 inhibitor deficiency can be divided into the following types:

absolute (isolated Quincke's edema).
relative angioedema with the formation of autoantibodies to the inhibitor.

Idiopathic (may be combined).

Other mechanisms are involved in the development of the disease.

May be associated with autoimmune diseases (may be combined).
Isolated angioedema, which occurs under the influence of angiotensin-converting enzyme inhibitors.
Quincke's edema can occur against the background of focal infection.
Determined by hypersensitivity to various foods, medications, insect bites (often combined with urticaria).

What forms of angioedema exist?

HAE – hereditary angioedema

HAE (hereditary angioedema) is a dominant autosomal disease. It is characterized by the irregular occurrence of angioedema in any area of the body. This complement-dependent angioedema accounts for no more than 2% of all cases.

It is very important to diagnose the disease in a timely manner using a screening test. If the values are normal, the patient does not have HAE. This happens in 96% of cases: in this case, there is no need for further diagnosis.

Angioedema can be caused by ACE inhibitors: the disease develops from the first days of use and continues to worsen over several months of regular use of the drug. Foci of Quincke's edema can appear in the area of the tongue, lips, larynx, neck, and pharynx. In some cases, intestinal edema develops, without any special external manifestations on the skin and visible mucous membranes, but accompanied by abdominal pain.

Prevention of angioedema, which is caused by ACE inhibitors, consists of complete abstinence from taking all drugs of this class. Patients need consultation with an allergist; in addition, they must always have with them a bracelet or document informing them about the disease and the specifics of treatment.

PAO – acquired angioedema

Patients may also experience acquired C1 inhibitor deficiency. In this case, the clinical picture of the disease does not include a burdened hereditary history, and the disease begins to manifest itself after 40 years. Against the background of the immunodeficiency virus, acquired complement-dependent edema of lymphoproliferative diseases, multiple myeloma, chronic hepatitis B and C can occur. PAO often appears several years before the onset of the underlying disease.

What symptoms are characteristic of Quincke's edema?

The main symptom is limited and painless swelling of the mucous skin, the membrane of subcutaneous adipose tissue, which causes a feeling of distension of the skin. The disease can occur spontaneously or under the influence of triggers - provoking factors (stress, trauma, acute viral infection, surgery, alcohol, ACE inhibitors, estrogen drugs).

Quincke's edema can begin unexpectedly. Within a few minutes, swelling appears, with sharply defined borders of a pale color. The size of the swelling can vary: from a coin to a child’s palm; it can last for several hours and then disappear without a trace.

Quincke's edema often occurs in the area of the tongue, eyelids, lips, ears, soft palate, hands, feet, and genitals. Some people (no more than 25%) experience swelling of the trachea, larynx and large bronchi: it is characterized by hoarseness, a feeling of lack of air and a “barking cough”.

The patient experiences only skin tension in the area of edema: there are no other sensations, not even itching. But when pressed, a hole does not appear. Quincke's edema can occur with typical urticaria rashes. The appearance of edema in the bladder mucosa can lead to difficulty urinating, and in the intestinal mucosa - to abdominal pain.

Swelling of the trachea, pharynx, and larynx is the most dangerous and is observed in every fourth case. Characteristic features are: sudden anxiety, aphonia, difficulty breathing, hoarseness, and in some cases even loss of consciousness. During examination of the mucous membrane of the throat, swelling of the palatine arches and soft palate can be observed, the lumen of the pharynx narrows, and there may be a threat of acute lack of air - asphyxia. In this case, emergency medical intervention is required.

How can angioedema be diagnosed?

To clarify the diagnosis, it is important to consult an allergist, and an experienced immunologist will tell you what needs to be taken so that allergy treatment is systemic. It is imperative to identify the factors that provoke the onset of the disease. For example, you need to find a connection with taking some medications, foods, etc. This connection can be further confirmed using allergic skin tests.

It is necessary to evaluate a general blood test, urine test, determine functional activity and the level of C1 inhibitor, conduct allergy tests, clarify biochemical blood parameters, levels of C4, C1q and C2 components of the complement system. In this case, it is necessary to exclude intestinal diseases, autoimmune diseases, blood diseases, and conduct stool tests for helminths.

What is needed to treat angioedema?

Treatment of the hereditary form of angioedema is impossible without medications that are prescribed to enhance the body’s production of the missing inhibitor (currently not yet registered in Russia). The main task is to identify the root cause of the disease and eliminate it.

For treatment you can use:

attenuated androgens;
tranexamic acid;
fibrinolysis inhibitors;
fresh or fresh frozen aminocaproic plasma;
various diuretics.

If the patient is diagnosed with idiopathic angioedema (with an unknown cause), it is necessary to use modern antihistamines for a long time. The choice of one of the antihistamine non-sedative drugs will be influenced by a consultation with an allergist, at which the patient’s individual characteristics and reaction to the new generation drugs will be determined.

The use of antileukotriene drugs may be necessary. If a severe course of the disease is initially diagnosed, it is necessary to use GCS, gradually reducing the dose to the minimum effective. If after using all of the above treatment methods there are no positive results, you can perform blood plasmapheresis, treatment with cyclosporine, use hydroxychloroquine, sulfasalazine, thyroxine, warfarin, methotrexate.

How to properly prevent the disease?

If the cause of angioedema is a drug or food allergy, you will need to consult an allergist, at which the specialist will recommend avoiding foods or medications that cause swelling.

All patients with HAE need to be treated for emerging foci of chronic infections, because with their exacerbation, the development of angioedema may occur. It is also advisable to exclude the use of oral contraceptives that contain estrogens, ACE inhibitors, including plasminogen activators.

Specialists at the Gorbakov Clinic advise following a strict diet (excluding all allergens), eliminating allergens from the patient’s environment, and taking preventative antihistamines during contact with various allergens or when plants are blooming.

Experienced allergists and immunologists at the Clinic will conduct professional diagnostics and prescribe adequate treatment, after which you can quickly and safely get rid of the symptoms of the disease and return to your usual way of life.

Quincke's edema is an allergic disease that is characterized by lightning-fast development and an increase in symptoms. Angioedema can affect any part of the body, which naturally causes significant inconvenience to patients. If you have ever experienced similar symptoms, or anyone in your family has suffered from angioedema, we recommend that you immediately seek advice from an allergist-immunologist, who will select the optimal course of treatment or recommend preventive measures.

First aid

If symptoms of Quincke's edema appear, you should immediately call an ambulance. Before her arrival, you need to carry out the following activities:

eliminate the allergen (in case of an insect bite, remove the sting);
ensure the supply of oxygen to the room where the victim is located;
calm the patient;
free from tight clothes, belt, tie;
solder generously and give sorbents (activated carbon);
instill vasoconstrictor drugs into the nose;
Apply a cold compress to the affected area to relieve swelling. If the cause of swelling is an insect bite or injection of a medication, a tourniquet is recommended;
give antihistamines.

Emergency care for Quincke's edema includes:

detoxification;
hormone therapy (administer prednisolone intravenously or intramuscularly);
desensitizing therapy (intramuscular injection of suprastin);
use of diuretics;
protease inhibitors.

Next, the victim is hospitalized in the allergy department. Quincke's edema, especially its severe forms, is a condition that requires urgent professional medical attention. In some situations, a lost minute can cost a human life.

Symptoms of angioedema / Quincke's edema

The disease can have a hereditary form (about 25% of all cases). The idiopathic variant occurs in approximately 30% of patients. In this case, it is not always possible to establish the true cause of the disease. In all remaining cases, Quincke's edema occurs when:

drug allergies;
insect bites;
food allergies;
helminths and protozoa;
autoimmune diseases;
blood diseases.

In some cases, swelling is also called huge urticaria. According to statistics, angioedema occurs in both adults and children, but in most cases the disease occurs in women at a young age. It occurs less frequently in older people and infants. This problem occurs at least once in a lifetime in 10% of the population.

When a specific allergen enters the body, a strong allergic reaction occurs, in response to which Quincke's edema develops. Concomitant diseases may include bronchial asthma and food allergies.

How are angioedema classified?

Angioedema is divided into the following subgroups.

Based on the clinical picture:

The course of the disease has: an acute period, which lasts up to 6 weeks, and a chronic period - more than 6 weeks;
The disease can be combined with urticaria, or it can be isolated.

Depending on the mechanisms of development of angioedema, it can be hereditary or acquired :

Hereditary angioedema is always isolated and comes in three types:
Type 1 – there is an absolute deficiency of the C1 inhibitor;
Type 2 – there is a relative deficiency of the inhibitor in the body;
Type 3 – no lack of inhibitor.

Acquired edema: Acquired C1 inhibitor deficiency can be divided into the following types:

absolute (isolated Quincke's edema).
relative angioedema with the formation of autoantibodies to the inhibitor.

Idiopathic - the cause of edema has not been established;

Combined form.

With the participation of other mechanisms:

May be associated with autoimmune diseases.
Isolated angioedema occurring under the influence of angiotensin-converting enzyme inhibitors.
Quincke's edema due to focal infection.
Determined by hypersensitivity to various foods, medications, insect bites (often combined with urticaria).

What forms of angioedema exist?

HAE (hereditary angioedema) is a dominant autosomal disease. It is characterized by the irregular occurrence of angioedema in any area of the body. This complement-dependent angioedema accounts for no more than 2% of all cases.

Angiotensin-converting enzyme inhibitors can cause angioedema: the disease develops from the first days of use and continues to worsen over several months of regular use of the drug. Foci of Quincke's edema can appear in the area of the tongue, lips, larynx, neck, and pharynx. In some cases, intestinal edema develops, without any special external manifestations on the skin and visible mucous membranes, but accompanied by abdominal pain.

Patients may also experience acquired C1 inhibitor deficiency – acquired angioedema (PAO). In this case, the clinical picture of the disease does not include a burdened hereditary history. Against the background of the immunodeficiency virus, acquired complement-dependent edema of lymphoproliferative diseases, multiple myeloma, chronic hepatitis B and C can occur. PAO often appears several years before the onset of the underlying disease.

What symptoms are characteristic of Quincke's edema?

stress;
injuries;
acute viral infection;
surgical interventions;
alcohol;
ACE inhibitors;
estrogen drugs.

Often with Quincke's edema, swelling occurs in the area of the tongue, eyelids, lips, ears, soft palate, hands, feet, and genitals. Some people (no more than 25%) experience swelling of the trachea, larynx and large bronchi: it is characterized by hoarseness, a feeling of lack of air and a “barking cough”.

The development of edema is most often not accompanied by itching, but sometimes, especially if the edema is associated with urticaria, itching may be the first sign and accompany the development of the allergic process. Quincke's edema can occur with typical urticaria rashes. The appearance of edema in the bladder mucosa can lead to difficulty urinating, and in the intestinal mucosa - to abdominal pain.

Classification

Depending on the root cause of the disease, there are 2 main types of edema in medicine:

allergic in nature, which occurs under the influence of a food, chemical or drug allergen;
pseudoallergic. This type is associated primarily with genetic predisposition.

Scientists include the idiopathic form of the disease in a separate group, which has not yet been fully studied.

The main cause of Quincke's edema in children is heredity. Pathology manifests itself in the form of urticaria, nausea and vomiting, fever, and sometimes loss of consciousness.

To avoid further complications, it is important to eliminate the causes of the disease in a timely manner. The main danger is that a small child cannot correctly explain his own condition. Therefore, the task of parents is to seek help from a doctor when the first “alarm bells” appear.

Diagnosis of Quincke's edema / angioedema

To clarify the diagnosis, it is important to consult an allergist, and an experienced immunologist will tell you what needs to be taken so that allergy treatment is systemic. It is imperative to identify the factors that provoke the onset of the disease. For example, you need to find a connection with taking some medications, food, and so on. This connection can be further confirmed using allergic skin tests.

It is necessary to evaluate using special tests:

general blood and urine analysis;
determine the functional activity and level of C1 inhibitor;
carry out allergy tests;
to clarify biochemical blood parameters, levels of C4, C1q and C2 components of the complement system.

In this case, it is necessary to exclude intestinal diseases, autoimmune diseases, blood diseases, and conduct stool tests for helminths.

Teaching a person the right behavior

It is necessary to recognize the initial signs of an impending attack; in case of minor exacerbation, the patient should consult a doctor. At the slightest difficulty breathing, change in speech, or swelling of the larynx, the patient should immediately call an emergency ambulance.

It is recommended to always carry with you a “passport of a patient with an allergic disease”, which contains all the data relating to his illness, the institution where he is registered, address, and contacts of loved ones.

Treatment of Quincke's edema / angioedema

To treat angioedema you can use:

antihistamines;
hormonal drugs;
bronchodilators;
attenuated androgens;
tranexamic acid;
fibrinolysis inhibitors;
fresh or fresh frozen aminocaproic plasma;
various diuretics.

If the patient is diagnosed with idiopathic angioedema (with an unknown cause), it is necessary to use modern antihistamines for a long time.

The use of antileukotriene drugs may be necessary. If a severe course of the disease is initially diagnosed, it is necessary to use glucocorticosteroids, gradually reducing the dose to the minimum effective. If after using all of the above treatment methods there are no positive results, you can perform blood plasmapheresis, treatment with cyclosporine, use hydroxychloroquine, sulfasalazine, thyroxine, warfarin, methotrexate.

How to properly prevent the disease?

If the cause of angioedema is a drug or food allergy, you will need to consult an allergist, at which the specialist will recommend avoiding foods or medications that cause swelling.

Specialists at the Gorbakov Clinic advise:

follow a strict diet (exclude all allergens);
eliminate allergens from the patient’s environment;
carry out prophylactic intake of prescribed antihistamines during contact with various allergens or flowering plants.

Experienced allergists-immunologists of the Clinic will conduct professional diagnostics and prescribe adequate treatment, after which you can quickly and safely get rid of the symptoms of Quincke's edema and return to your usual way of life.

Causes

Quincke's edema is the body's response to an allergen. The following substances and agents may be the cause:

toxins and poisons, incl. insects;
dust;
animal hair and dander;
microorganisms - fungi, bacteria and even viruses;
chemicals such as turpentine and phenol;
latex products;
plant pollen;
medications: anesthetics, bromides, iodine, immunoglobulins, B vitamins, antihypertensives, antibiotics;
substances contained in eggs, nuts, milk, fish, honey, citrus fruits, strawberries or chocolate;
food colors, flavors, flavor enhancers, preservatives;
artificial formula for babies.

Indirect factors that provoke angioedema include endocrine diseases and infection with worms. In people with hereditary allergies, swelling can be triggered by hypothermia or stress. A severe allergic reaction is insidious in that it can develop not during the first contact with the agent, but during the next one.

Prognosis and prevention

In order to avoid possible tissue swelling, it is recommended to follow certain rules. What are they?

avoid contact with products and drugs that cause allergies;
If such reactions occur to certain categories of medications, be sure to inform your doctor;
When taking a new type of antibiotic, keep antihistamines on hand;
watch your diet;
follow a gentle diet;
take vitamins to strengthen your immune system.

If the cause of Quincke's edema is a food allergy, then it is necessary to reconsider the diet. There are a number of foods that are more likely than others to cause this pathological condition. This:

strawberries;
strawberry;
bee products;
fish;
eggs;
seafood;
citrus fruits (oranges, tangerines, lemons, etc.);
nuts.

If food is the cause of the disease, then the diet should be adjusted properly, eliminating the above foods. A strict diet should not become a way of life, since the body needs a number of vital substances.

Complications

The most important thing in treating a disease is timely provision of medical care. Otherwise, various, extremely undesirable and dangerous consequences may occur. This applies, first of all, to damage that affects the mucous membrane of the larynx, as well as the meninges with symptoms of meningitis. Statistics show that these complications in most cases lead to death.

With angioedema, a life-threatening reaction such as anaphylactic shock often develops. Its main features:

Swelling of the oropharynx, larynx and tongue;
Widespread itching;
hives;
bronchospasm, lacrimation;
nausea, vomiting, diarrhea;
tachycardia, low blood pressure, arrhythmia, acute heart failure;
convulsions, suffocation, coma.