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Allergy, Allergies

© medicalpicture® /Frank Geisler

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An allergy is an abnormally sensitive (exuber-

ant) reaction of the immune system to certainforeign environmental substances. The reac-

tion is called “exuberant” because the body’s

own immune system responds to foreign sub-

stances (e.g. pollen) that otherwise present

no health risk, unlike germs. Most allergies

involve animal proteins or plant matter, e.g.

from flower pollens, mites and molds.

Allergy image selection in the

medicalpicture® ImageBank

Allergy test photos are available in the Image-

Bank. Microphotos and REM - photographs

of allergens, house-dust mites and other

agents. 3D images and illustrations of pollen

and mechanisms of action.

Diagnosis

An allergy can manifest itself in the form of

slight rashes, as well as in life-threatening

reactions (anaphylactic allergic reaction). Ifa patient has shown a reaction to a certain

medication (agent or adjuvant), the medica-

tion as well as chemically related substances

should not be given in the future.

Symptoms

Allergies can cause the following symptoms:

Respiratory illnesses (e.g. constant sniff-

ling, nasal polyps, paranasal sinusitis, hay

fever, bronchial asthma)

Skin irritations (e.g. urticaria, contact ecze-

ma, neurodermatitis)

Eye problems (e.g. conjunctivitis)

Digestive tract problems (e.g. nausea,

cramps, diarrhea)

Fever (e.g. hay fever)

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Allergy, Allergies

Fatigue and problems concentrating (hy-

potonia)

Insomnia (e.g. house-dust allergy)

The two stages of an allergy In the first stage, an antigen enters the body

and is absorbed and changed by a phagocy-

te. The T helper cells stimulate the B lympho-

cytes to produce antibodies. The next time

contact is made with the antigen, it binds to

the antibodies formed in the first step that

are attached to mastocytes. The mastocytesthen release mediators, e.g. histamine, sero-

tonin, prostaglandin). These lead to the aller-

gic symptoms.

Weblinks

Article from medicalpicture® about allergies

allergy.medical-picture.com

medicalpicture GmbH - medical and science

images for all media

www.medical-picture.com

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http://allergy.medical-picture.com/

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Imagemap LinkImagemap Link

Imagemap Link

Marguerite pollen

© medicalpicture® / Institut Kage

House dust mite


Dandelion pollen

© medicalpicture® /Institut Kage

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Imagemap Link

House dust mite

© medicalpicture® /Institut Kage


Asbestos fiber


Barm pollen



http://bilddatenbank.medicalpicture.de/mappe/105069


























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Imagemap Link

Contact eczema

© medicalpicture® / Isabel Christensen

Imagemap Link

Contact eczema

© medicalpicture® /Isabel Christensen


Mastocyte

© medicalpicture® / Isabel Christensen

Vascular reaction

© medicalpicture® /Isabel Christensen


Desensitization

© medicalpicture® /Dianino

Allergology

© medicalpicture® /gezett




























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Urticaria

© medicalpicture® /Wolfgang Steche

Angioödem


Contact allergy

© medicalpicture® /neuderm

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Urticaria© medicalpicture® /Wolfgang Steche

Neurodermatitis therapy


Kangalfisch, surgeonfisch

© medicalpicture® /Kruska































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Pricktest, allergy test

© medicalpicture® /Steche

Shot



© medicalpicture® /Steche

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Pollen calendar







Atmadisk for treatment of Asthma

© medicalpicture® /KaPe Schmidt




























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