An allergy is your body's hypersensitive reaction to a normally harmless
substance. These substances, be they food, pollen, a been sting, dust mites, or
a host of others, are called allergens. In the body of an allergic person, the
immune system reacts abnormally when an allergen is brought into contact or
absorbed into contact or absorbed by their body.
As the allergy season progress, many people complain of fatigue, exhaustion and
lethargy. Allergies are one of the most common medical ailments. Sinus, contact
dermatitis, food, and reactions to insect stings are the most common allergy
types.
This book sets out detail what causes allergic reactions, their