MedicalTerminology DB
Infection & Immunity Immune System & Allergies

delayed-type hypersensitivity response

Meaning of delayed-type hypersensitivity response: An inflammatory response that develops 24 to 72 hours after exposure to an antigen that the immune system recognizes as foreign.

Definition of delayed-type hypersensitivity response

An inflammatory response that develops 24 to 72 hours after exposure to an antigen that the immune system recognizes as foreign. This type of immune response involves mainly T cells rather than antibodies (which are made by B cells). Also called DTH.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.