Dust, dust mites, mold, mildew and fungus are common year-round environmental allergens that can cause symptoms such as congestion, sneezing, headaches, asthma, excessive mucus and coughing. If you’re tired of avoiding your furry friends because of your allergies, AAT may be able to help there too! Pet dander is another common year-round allergen that can cause symptoms such as sneezing, itchy skin, hives, congestion or a runny nose. AAT can help pet owners enjoy spending time with their furry companions without the worry of allergy symptoms ruining their fun.