Type I hypersensitivity reactions underlie all atopic and many allergic disorders. The terms atopy and allergy are often used interchangeably but are different:
Atopy is an exaggerated IgE-mediated immune response; all atopic disorders are type I hypersensitivity disorders.
Allergy is any exaggerated immune response to a foreign antigen regardless of mechanism.
Thus, all atopic disorders are considered allergic, but many allergic disorders (eg, hypersensitivity pneumonitis) are not atopic. Allergic disorders are the most common disorders among people.
Atopic disorders most commonly affect the nose, eyes, skin, and lungs. These disorders include
- Atopic dermatitis,
- Contact dermatitis,
- Urticaria and angioedema (which may be primary skin disorders or symptoms of systemic disorders),
- Latex allergy
- Allergic lung disorders (eg, asthma, allergic rhinitis, allergic bronchitis, bronchopulmonary aspergillosis, hypersensitivity pneumonitis), and allergic reactions to venomous stings.
Allergens: By definition, an allergen induces IgE-mediated and TH2-cell immune responses. Allergic triggers are almost always low molecular weight proteins; many of them can be constituted as airborne particles.
Allergens that most commonly cause acute and chronic allergic reactions include:
Pollens (tree, grass, weed)
Symptoms and Signs
Common symptoms include rhinorrhea, sneezing, and nasal congestion (upper respiratory tract); wheezing and dyspnea (lower respiratory tract); and itching (eyes and skin).
Signs may include nasal turbinate edema, sinus pain during palpation, wheezing, conjunctival hyperemia and edema, and skin lichenification. Stridor, wheezing, and sometimes hypotension are life-threatening signs of anaphylaxis. In some children, a narrow and high-arched palate, narrow chin, and elongated maxilla with overbite (allergic facies) are thought to be associated with chronic allergy.
Homoeopathic approach to Allergy:
Allergies indicate a defective immune system and are considered in Homoeopathy as communication from the body that something is not right. Homoeopathy believes that the allergen is just the trigger to the problem and not the underlying cause. Homoeopathic treatment can remove the underlying cause for the allergic tendency and eliminate it completely. A Homoeopathic practitioner does not treat the disease itself, but looks at the entire individual and how the whole body reacts. An appropriately selected Homoeopathic remedy that is individually chosen to the totality of symptoms that the person is experiencing, not just the allergy symptoms, stimulates the body’s vital force and immune system so that the body can heal itself. However, Homoeopathic medicines can also be used to treat the acute phase of their allergy. Homoeopathic treatment is safe and gentle, without any side-effects. Homoeopathy medicines are prescribed on the basis of physical, emotional, and genetic make up that individualizes a person. Homoeopathy is very effective in managing all the symptoms of Allergies and also plays an important role in preventing relapse of the condition and improving the general health of the person.