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:
Hello,

Thanks for your query.

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

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Hi,

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:
Hello

Welcome to HCM

I can understand your...

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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...

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Recent questions on  Delayed hypersensitivity

doctor1 MD

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

My frend has taken Bactrim DS for a week for mastoiditis ands enveloped a severe rash and fever 24 hrs ago. Her MD is not available this weekend. I...

doctor1 MD

Around Mothers Day I was prescribed Bactria and had a full blown allergic reaction to it. During that time with the fevers it caused but lips...

doctor1 MD

My daughter is 7 years old. Few months before we noticed that she is loosing hair in left eyebrow. Last week we found that she is loosing hair from...

doctor1 MD

Hi, i am jenny from Bangladesh & 21 yrs old.My skin is originally fair. But about 1 yr ago, uneven tones were found in the exposed parts of my...

doctor1 MD

A few weeks ago, I woke up and my eyes were red, itchy, and one was crusty and shut. I called the doctor s office and they called in some eye drops...

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