Substances that provoke an allergic reaction are called ‘Allergens’. The ‘list’ of allergens can be best described by the dictum that “Everything under the sun including the Sun itself can act as a potential allergen”. This makes our body a virtual ‘battle field’ with different allergens attacking from various directions leading to various allergic manifestations.

Exogenic allergy is caused by various external allergens like dust, pollution, industrial waste, chemicals, insecticides, pesticides, food like eggs, nuts, preservatives etc. These allergens are actually just a ‘Tip of the Iceberg’. Our highly polluted environment compels us to inhale and ingest various chemicals that are potential allergens.

Allergens therefore appear to be unavoidable. We really can’t avoid dust, wheat or sun. Even human mother’s milk has been proven to contain various pesticides that are well recognized as allergens.