Delayed hypersensitivity

What is Delayed hypersensitivity?

A cell-mediated response that occurs in immune people peaking at 24–48 hours after challenge with the same antigen used in an initial challenge. The interaction of T-helper 1 (Th-1) lymphocytes with MHC class II positive antigen-presenting cells initiates the response. This interaction induces the Th-1s and macrophages at the site to secrete cytokines, which are the major factors in the reaction. Called tuberculin-type hypersensitivity.

Questions and answers on "Delayed hypersensitivity"

Last week Friday 10/18 I had my flu shot Monday morning I started noticing hive on my forehead and neck with achy joints I started taking Zyrtec...

doctor1 MD

Brief Answer:
Kindly provide few more details

Detailed Answer:

Thanks for your query.

As the flu vaccine contains dead virus, an allergic reaction...

Read Full Thread   Ask a Doctor Now


My 10.5 month old baby had an allergic reaction to egg on 13th September. His ears swelled up and were extremely red and he developed a rash on...

doctor1 MD

Brief Answer:
The present skin lesions can be due to delayed hypersensitivity reaction

Detailed Answer:

Welcome to HCM

I can understand your...

Read Full Thread   Ask a Doctor Now

Seven days ago, some type of flies bit me repeatedly on my calves and ankles. Although I had many bites, there was no swelling or itching​ at all...

doctor1 MD

Brief Answer:
Can occur due to delayed hypersensitivity by mononuclear leukocytes

Detailed Answer:
Thanks for asking on HealthcareMagic.

I have...

Read Full Thread   Ask a Doctor Now

Recent questions on Delayed hypersensitivity

Ask Question
Doctor Image

Hi, I am Dr. Andrew Rynne (Family Physician). I will be guiding you through the process. Please write your question below.

Related Drugs/Medications
Related Treatment/Therapy
Related Lab Tests
Related Procedures
Related Medical Topics