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What are the symptoms of allergies?


Allergy Symptoms

Introduce you to the symptoms of allergies, especially the early symptoms of allergies. What are the manifestations of allergies? What happens if I have an allergy?


Allergy symptoms

Typical symptoms: erythema-like rash, light allergy, drug allergic reaction, systemic allergy and fever rash arthralgia, food allergy, allergic dermatitis, itching, skin allergies caused by sunlight, wheal, systemic allergic reaction, artificial urticaria, redness itch.


Related symptoms: Erythema-like rash Photo-allergy Drug allergic reaction Systemic allergy and fever rash Joint pain Food allergy Allergic dermatitis Itching Itching caused by sun exposure Skin allergies Systemic allergic reaction Artificial urticaria Redness and itching


Diagnosis of allergy symptoms


Common types of allergies:


1. Allergic purpura


A vascular allergic bleeding disease. The body has allergic reactions to certain substances, causing widespread small vasculitis, increasing the permeability and fragility of small arteries and capillaries, with bleeding and edema. 

Infographics showing Allergy Symptoms


This is more common in children and adolescents. 1-3 weeks before the onset of the disease often have a history of upper respiratory tract infection, and general malaise, fatigue, fever, and loss of appetite, followed by skin purpura, accompanied by arthralgia, abdominal pain, hematuria, or black stools, etc. These symptoms are often misdiagnosed .


2. Allergic dermatitis

Allergic dermatitis mainly manifests as skin redness, itching, pain, urticaria, eczema, macules, papules, wind rash, purpura, etc. 

There are the following performances:


(1) Drug eruption

Some drugs can cause allergic skin reactions, mainly manifested as erythema, purpura, blisters and loose epidermis, itching and pain, and sometimes accompanied by low fever. 

After the rash subsided, there was no hyperpigmentation. Western medicine allergies are more common, such as penicillin, sulfonamides (such as smz), and analgin. 

Some ingredients in Chinese medicine can also be used as allergens. 

Herbs reported to cause allergic reactions include Houttuynia cordata, Brucea javanica, smallpox, borneol, rhubarb, etc. 

Chinese patent medicines such as Liushen Pills, Niuhuang Jiedu Tablets, Compound Danggui Injection, Danshen Shuxin Tablets, etc. After the drug eruption occurs, the drug must be stopped immediately.


(2) Contact dermatitis

Refers to the skin after contact with a certain substance, local erythema, edema, itching pain, severe cases may have blisters, peeling and other phenomena. 

The substances that can cause contact dermatitis on the skin are jewelry, bracelets, frames, sandals, chemical fiber fabrics, external medicines, chemicals, cosmetics, etc. 

Once the above symptoms are found, immediately look for items that cause allergies and stop contact.

 Most people who are prone to contact dermatitis are allergic people.


(3) Eczema

There is obvious exudation. In recent years, the incidence of eczema has increased, which is related to the abuse of chemicals, environmental pollution, poor management of the three wastes, accelerated life rhythm, increased mental pressure and other factors.

 Symptoms: It can occur at any age. It can occur on any part of the body surface. 

There are repeated attacks. Erythema, papules, blisters, erosion, exudation, scabs, scaling, and pigmentation can be seen locally or all over the body; severe itching.


(4) Urticaria (rumpus, rubella block)

Definition: A kind of vascular neuropathic response of the body to various stimuli on the skin (small blood vessels of the subcutaneous tissue expand, the permeability of the tube wall increases, exudation occurs, and local edema is formed). 


1. External exposure to cold, heat, sunlight and other stimuli, mosquitoes, insect bites, nettle, sumac and other plants.

2. Internal contact with fish, shrimp, seafood, mushrooms, sulfonamides, salicylic acid, penicillin, serum. Toxins produced by parasites.

3. Mental nerve irregular menstruation, nervousness, fatigue, depression, etc. four family genetic history (inheritance of allergies). 


1. Sudden severe itching or burning sensation of the skin. 

2. Rashes: The affected area quickly appears localized, lumpy, puffy wind masses ranging in size from rice grains to palm size, often ranging from nails to coins, slightly higher than the surrounding skin.


(5) Skin scratches

Itchy skin, scratches after scratching with hands. In severe cases, it does not stroke, and it will occur when it is touched with hard objects. The symptoms are the same as urticaria.


(6) UV allergy

The two penetrating ultraviolet rays of uva and uvb in the sun will directly reach the skin dermis, causing redness, burning, heat and pain in people with allergies. 

This is the solar dermatitis commonly known in medicine as ultraviolet allergy. 

At the same time, ultraviolet radiation can also lead to a sharp increase in the health killer-free radicals in the body, causing local skin wrinkles, pigmentation, cell damage, and even changing the immune system, causing more serious phototoxicity and photoallergic reactions. 

Conventional UV protection measures include the use of sunscreens and anti-UV umbrellas. Sunscreens can only block part of uva, but they are not very useful for uvb. 

UV-protected umbrellas can do nothing about the ultraviolet rays reflected from the ground and walls. Experts point out that those with solar dermatitis and ultraviolet allergy must be treated internally.


(7) Cosmetic allergies

Cosmetics can cause allergies such as redness, swelling, heat, pain, and blistering. 

From a medical point of view, if you are allergic to a certain cosmetic, it is best not to use it. 

But sometimes in life can not be separated, such as middle-aged and elderly hair coloring and light makeup of working women. 

The most scientific method at this time is to fundamentally improve allergies.


3. Respiratory tract allergies


(1). Allergic asthma

Allergic asthma occurs in the spring flowering season and the autumn and winter cold seasons. 

The sensitizing medium acts on the bronchus, causing bronchospasm smooth muscle spasm, resulting in a wide range of small airway narrowing, causing wheezing, suffocation, cough, severe suffocation and even death.


Allergic asthma usually develops at an early age. Patients often have atopic constitutions that are allergic to certain substances, such as inhalation of cold air, pollen, dust mites, etc., eating fish, shrimp, milk, etc., or exposure to certain drugs, such as penicillin.

When these allergens enter the patient's body, a series of reactions will cause mast cells or basophils to release sensitizing active substances, acting on the bronchus, causing a wide range of small airway stenosis and pant symptoms. 

If left untreated, asthma can fatal.


(2). Allergic rhinitis

There are three main symptoms of allergic rhinitis: one is paroxysmal continuous sneezing, usually no less than 5 per seizure, and even more than a dozen or dozens in a long time.

The time for sneezing is usually early rise and night Falling asleep or changing with the seasons, severe, there will be several attacks almost every day.

Second, a lot of watery snot after the sneezing process.

Third, the nasal cavity is blocked, the severity of each attack is different, and can last for more than ten minutes or It ranges from tens of minutes.


(3). Bronchial asthma

Bronchial asthma is a clinical condition of paroxysmal dyspnea caused by bronchiole stenosis, and the lung is temporarily over-inflated. It is episodic and generally relieves itself in a short period of time. 

Most of them begin to develop in childhood, but also in young and middle-aged people. 

It is generally believed that the disease is caused by the body's allergy to certain substances, and the etiology is more complicated.

 It usually occurs more frequently in winter and at night. Before the attack, there may be a hunch. 

The patient had chest tightness at the beginning, then showed difficulty breathing, especially difficulty in exhaling, accompanied by wheezing, often forced to sit up and breathe hard, purple lips, cold sweating, anxiety during severe attacks. 

The onset can last for tens of minutes, hours, or even days. After the attack, the whole body was weak. 

The drugs used to control hair are mainly theophylline drugs such as aminophylline, adrenaline drugs such as epinephrine, ephedrine, shuchuanling, etc., adrenocortical drugs, cholinergic blockers, etc., but side effects Larger. 

Methods to prevent seizures include removing incentives, avoiding contact with allergens, using disodium tryptophanate, and strictly desensitizing. 

The nature and treatment of these two diseases are different. 

Asthma status is a serious condition of bronchial asthma, and effective first aid measures should be taken in time.


(4). Pollen allergy

At present, the prevalence of pollen allergy in the world has reached about 5% to 10%, and the number of patients in our country is increasing year by year. 

In the past, people usually thought that spring was the most frequent season for pollen allergies, and the fact is that August to September in summer and autumn is the real high incidence of this disease.


Pollen allergy Although the main direct allergen is pollen, it is closely related to the social environment, lifestyle changes and other comprehensive factors.

 For example, drug abuse, air pollution, water pollution, and the extensive use of food additives have all caused the human body to be exposed to more antigenic substances. 

In addition, the control of infectious diseases has also led to an increase in allergic diseases.

 Because pollen contains a sensitized protein component, once it is inhaled by people with allergies, it will trigger an allergic reaction. The types of pollen that cause allergies vary with the season.

 In spring, tree pollen is the main species. 

The most prone to pollen allergies are seed trees. Cypress, balsam, Platanus, Ailanthus, pine, poplar, willow, elm, etc.

In these plants the amount of pollen is large, the volume is small, and the content in the air is high. 

It is easier to spread in the windy days. Therefore, there are many people who have pollen allergies during the spring outing. In summer and autumn, it is dominated by pollen grass and wormwood.


Studies have shown that the pathogenesis of pollen allergy is that an allergic physique contains an immunoglobulin called IgE. 

Pollen combines with it to degranulate mast cells and release the allergic mediator histamine, which in turn can cause the body's capillary permeability increases, causing mucosal edema, increased glandular secretion and itching.

Therefore, people who are allergic to pollen will have itchy eyes, nose, ear mucosa and skin. 

Patients with allergic rhinitis will show sneezing and runny nose.

 If the allergy occurs on the bronchial mucosa, the patient will have asthma symptoms.


(5). Air allergy

Pollen, dust mites, catkins, cold air, etc. can cause allergic rhinitis. The main symptoms are continuous sneezing, a lot of runny nose, stuffy nose, itchy nose, throat itch, external ear canal itch, etc.

 Some are perennial and some are seasonal. The turbinates were swollen, moist, pale in color, and smooth on the surface.


4. Red blood on the face

Red blood capillary is mainly due to facial telangiectasia or some facial capillaries caused by superficial facial phenomenon. 

The face of red blood capillary patients looks reddish than normal normal skin color, and some are only red on both sides of the zygomatic part, the border is round. 

This kind of skin is thin and sensitive, and its face is redder when it is too cold, too hot, and emotional. 

In severe cases, sedimentary stains will also form, which is difficult to cure.


5. Allergic shock

Refers to a strong systemic allergic reaction. Symptoms include a drop in blood pressure, a rash, throat edema, and difficulty breathing. 50% of allergic shocks are caused by drugs. The most common is penicillin allergy, which usually occurs within 5 minutes after medication.


6. Pediatric allergies

Many common allergens are foods that children like to eat, drinks they are used to drinking, smells, or places where they often play, so they are often overlooked.

 Children often show physical discomfort and behavior problems shortly after exposure to allergens. 

Common allergenic foods are: milk and dairy products, flour, corn, eggs, sugar, tomatoes, potatoes, chocolate, yeast, food coloring, fruits, beef, pork, etc. 

Common sensitizing environmental factors are: pollen, mold, dust, trees, tobacco, smoke, perfume, gasoline, paint, insecticides, detergents, drugs, pets, carpets, etc. 

Comprehensive factors are more likely to cause allergies.


Children's allergic manifestations include general symptoms and behavioral changes. 

They often appear within half an hour to several hours after the children are exposed to allergens. 

Pediatric cheeks, nose, and earlobe flushing, wet ear canal, ear pain, nasal congestion, sneezing, dark circles, swollen eyelids, sagging, headache, dry lips, dry or sweaty skin, wrinkles in the corners or palms, abdominal pain, diarrhea, bloating. 

Constipation, eczema on arms, legs or joints, repeated infections, chronic cough, asthma, shallow and fast or irregular breathing, pulse disturbance, increased blood pressure, and tight joints. 

Behavior change. Children in different age groups behave differently.


0 - 1 year old infant group: Continuous crying or screaming, unable to eat or need to eat continuously, irritability or extreme depression, difficulty falling asleep or lethargy, unwilling to be hugged, shaking his head, etc. 

Children aged 1 to 3: Inexplicable tantrums, excessive activity, jumping around, crashing into bed, fatigue, curled up in dark corners such as under tables and chairs, under the bed, or inside furniture, refused to be touched, unwilling to dress, Undressing, etc. 

Children aged 3 to 6: Sudden changes in mood and behavior, hyperactivity, inability to sit quietly to eat, listen to stories or watch TV shows, irritability, fatigue, disobedience, depression, aggressive behavior, shaking legs, lethargy or nightmares, writing or cannot draw on a horizontal line when drawing, or the larger the word is, the higher it is (excited type), or the smaller the word is, the lower it is (declined type), intermittent speech difficulty, and wetting after 5 years old ,and many more.


7. Food allergies

Some people may suffer from gastrointestinal tract allergies after eating fish, shrimp, crab, eggs, milk and other foods or taking certain medicines, mainly manifested as nausea, vomiting, diarrhea, abdominal pain and other symptoms.



Author's Bio

Doctor Shawna Reason, Virologist
Dr. Shawna Reason
Name: Shawna Reason

Education: MBBS, MD

Occupation: Medical Doctor / Virologist 

Specialization: Medical Science, Micro Biology / Virology, Natural Treatment

Experience: 15 Years as a Medical Practitioner

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