Type 2 inflammation is a specific type of immune response pattern that can cause an overactive response to certain environmental triggers and may be responsible for certain medical conditions including, moderate-to-severe asthma, moderate-to-severe atopic dermatitis (eczema), bullous pemphigoid, chronic spontaneous urticaria (hives), chronic obstructive pulmonary disease (COPD), eosinophilic esophagitis, nasal polyps, or prurigo nodularis.