What Are The Sources Of Allergy ? Home » Questions » Allergies & Asthma » What Are The Sources Of Allergy ? 0 Vote Up Vote Down Anonymous asked 8 years ago 1 Answers 0 Vote Up Vote Down Nationwide Clinics Staff answered 8 years ago Hello, Allergies can be due to different causes like, dust, insects, certain foods, certain medication, pet dander, pollen, latex, mold, heat/cold, exercise etc. Regards, Dr Gowri Kulkarni