The term "allergic issues" refers to any medical condition or symptom that is caused by an allergic reaction. Allergies occur when a person's immune system overreacts to a substance, such as pollen, pet dander, or certain foods, treating it as if it were a foreign invader and triggering an inflammatory response. This can result in symptoms ranging from mild (such as sneezing or itchiness) to severe (such as difficulty breathing or anaphylaxis). The phrase "allergic issues" is a broad term that encompasses all types of allergies and their associated symptoms.