What is a disadvantage of a Type IV?

A disadvantage of a Type IV hypersensitivity reaction, also known as delayed-type hypersensitivity, is that it can lead to chronic inflammation and tissue damage. This response typically occurs 24 to 72 hours after exposure to an antigen, making it harder to identify the cause of the reaction. Additionally, the prolonged immune response can result in conditions like contact dermatitis or granulomatous diseases, which may require extensive treatment and management.