Allergy

One can react allergic to different ingredients of the flu vaccination. The most common is an allergy to chicken protein.This plays an important role, as the flu vaccines are based on fertilized chicken eggs and may therefore contain traces of chicken egg white. An allergic reaction against it can take all forms, from mild symptoms consisting only of a somewhat intensified local inflammatory reaction, to a skin rash with itching, to a dangerous anaphylactic shock.

Anaphylactic shock

Anaphylactic shock is the worst form of allergic reaction to an allergen. Contact with the allergen – in the case of the flu vaccine this is one of the many ingredients of the vaccine – triggers an extreme reaction of the immune system. This results in an excessive release of various messenger substances and immune signals.

In the case of an anaphylactic shock, this leads to a destabilization of the circulation up to a real circulatory shock, which manifests itself by an enormously low blood pressure and a strongly increased pulse. In addition, the mucous membranes in the respiratory tract can swell so much that life-threatening respiratory distress occurs. In the following, you may be interested in the various causes of shortness of breath. You will also find more detailed information on this topic at Anaphylactic shock You will also find more detailed information on this topic at Anaphylactic Shock

Diarrhea

In addition to local and systemic inflammatory reactions, a flu vaccination can also cause symptoms such as diarrhoea. This side effect is also ultimately due to the immune reaction. During the recruitment of the immune system against the influenza vaccine, many different messenger substances are released.

These lead to changes in the balance of the hormone balance. Some of the affected hormones are responsible for the regulation of the water balance, among other things. If these hormones cause the intestines to absorb only a small amount of water and release a large amount of water from the body, the typical thin and watery bowel movements occur. By definition, diarrhea is only referred to when both the consistency and the frequency of bowel movements are significantly altered.