In her book, "Allergies: Disease in Disguise," author Carolee Bateson-Koch DC MD, writes: "The greatest challenge with allergy is recognizing it."
Allergy does not cause every disease, but it can be a major factor in any disease.
It's easy to recognize its most common symptoms. Runny nose. Watery eyes. Sniffling. Sinus problems. Headache. Skin rashes. Hay fever. Asthma.
Less commonly known, but far more debilitating, allergy plays a significant role in arthritis, colitis, gall bladder disease, Chrohn's disease, depression.
Its full range of symptoms is staggering, affecting neurologically, in joints, circulation, respiration, digestion, intestines, skin, musculo-skeleton, hormones and more.
Allergy symptoms are visible in multiple sclerosis, cataracts, conjunctivitis, diabetes, sneezing, hoarseness, otitis media (inflammation, discharge from ear, earaches,) obesity, fever, bed-wetting, low blood sugar and tinnitus for starters.
Allergic reaction such as anaphylaxis, can kill from within 16 minutes to two hours. But its typical modus operandi is an almost imperceptible erosion of the immune system that so weakens it as to let life-threatening diseases gain a foothold. This kills us slowly, over a lifetime, with multiple symptom syndromes.
Inflammation is its primary keynote - pain, swelling, heat and redness.
Heredity. Our individual biochemical makeup. Toxic load be it injected as vaccine, ingested on food as pesticides, food coloring, preservatives, sugar, inhaled as pollution or second-hand smoke or absorbed by the skin from the chemicals we use to fireproof carpeting and drapes or clean our homes. Drugs. Illness. Stress. Dental fillings. Foods. Mold spores. Pollen. And so on. And so on. And so on.
The purpose and function of the immune system is the same for all mammals - homo sapiens, canis or feline. (Marsupials too, but let's not get lost in the weeds.)
As the author explains, because of this vast repertoire of expression and manifestation, allergy is disease in disguise for both man and beast.