According to Allergy Aware, the itching and watering happens because of
a histamine reaction in the body.
If your dog has an allergy to something, it will take very little to set of
a histamine reaction in their body.
Not exact matches
Allergies occur when we are exposed to stimuli that will trigger our
body's antibodies to release immune chemicals like
histamine that will,
in turn, cause allergic
reactions.
In order to offset the immediate symptoms of an allergic
reaction, people with allergies can take anti-histamines, a class of drug that limits the action of
histamine on the
body.
When the
body comes into contact with pollen, cells
in the lining of your nose, mouth and eyes release a chemical called
histamine that triggers the symptoms of an allergic
reaction.
It can also help minimize sneezing and itching associated with hay fever by reducing the amount of
histamine (the substance that plays a large role
in allergic
reactions)
in your
body.
The stress response activates the flight - or - flight
reaction, which over time can lead to impaired detoxification of toxins, hormones, and amines (e.g.
histamine and thyramine that naturally occur
in some aged and preserved foods like cheese, wine, and fish), all of which, when built - up or imbalanced
in the
body, can trigger a migraine.
When the immune system identifies these errant proteins as invaders, it does what it does
in response to any other invading pathogen: mount an attack and fortify the
body's defenses by releasing
histamine (which tries to get rid of the «pathogen» by inducing diarrhea, sneezing, runny nose, watery eyes, and all the other symptoms you might get from an allergic or intolerance
reaction).
Mast cells release
histamine and when their activity is increased can cause a major
histamine reaction leading to inflammation
in various tissues of the
body.
Thus, when the food is consumed, antibodies (the immune system response to foreign bacteria or toxins) flood the
body with substances such as
histamine that cause allergic symptoms, which can turn up anywhere
in the
body, including the respiratory system, intestinal tract, or skin.13 Essentially, negative
reactions to food associated with a full - blown allergy, or even a less severe sensitivity, stress the adrenal glands and immune system and can cause seemingly unconnected issues later on
in life.14
The symptoms are so similar because allergic
reactions always involve the release of
histamine in the
body.