The type of allergy symptoms experienced by adults depends on the specific type of allergy. People can be allergic to foods, drug, latex, pollen, pets, mold and insect stings. Some foods that can cause allergic reactions are nuts, shellfish or milk; some symptoms of food allergies can include wheezing, vomiting, difficulty breathing and hives, states the American College of Allergy, Asthma & Immunology.
Some symptoms caused by an insect sting can include hives, inflammation at the sting site, pain, itchy skin and possible anaphylactic shock, which requires prompt medical attention. Similarly, adults or anyone with seasonal allergies can experience symptoms that include watery eyes, sneezing and a runny nose, notes Merck Manuals. These symptoms usually occur during spring or fall months when there is a high pollen count. Hay fever can be type of seasonal allergy.
Due to the different variety of allergy types, there can be many different symptoms associated with a particular allergy