URMC / Encyclopedia / Content Search Encyclopedia Types of Allergens Many different types of allergens can trigger an allergic reaction, requiring clinical care by a physician or other health care professional. Listed in the directory below are some, for which we have provided a brief overview. Animals Dust Mites Foods Egg Allergy Diet Lactose Intolerance Milk Allergy Diet Peanut Allergy Diet Shellfish Allergy Diet Soy Allergy Diet Tree Nut Allergy Diet Wheat Allergy Diet Insect Stings Latex Mold Pollen Poison Ivy/Poison Oak Medical Reviewers: Kirsi Järvinen-Seppo, M.D., Ph.D.