Hypersensitivity reactions like contact dermatitis can be caused by______________?

Related Mcqs:

1. Out of the following hypersensitivity reactions, in which type a single dose of the antigen can act as both the sensitizing and shocking dose_______________?

   A. Anaphylaxis
   B. Arthus reaction
   C. Serum sickness
   D. Contact dermatitis

2. The 3 – D’s dermatitis, diarrhoea and dementia are seen in deficiency of____________?

   A. Thiamin
   B. Riboflavin
   C. Niacin
   D. Pyridoxine

3. The term” contact point” which is often used to designate the contact of teeth i the same arch is a_____________?

   A. Synonym
   B. Antonym
   C. Misnomer
   D. Laevonomer

4. The immediate type of hypersensitivity in which histamine doses not play a major role is______________?

   A. Urticaria
   B. Asthma
   C. Anaphylaxis
   D. Arthus reaction

5. Type IV hypersensitivity reaction is mediated by which of the following________________?

   A. B-cells
   B. Active T cells
   C. NK cells
   D. Plasma cells

6. The distinguishing characteristic of a positive delayed type hypersensitivity skin test is______________?

   A. Erythema
   B. Necrosis
   C. Induration
   D. Vasculitis

7. Type I hypersensitivity is mediated by which of the following immunoglobulins ?

   A. IgA
   B. IgG
   C. IgM
   D. IgE

8. The prototype of Type II hypersensitivity reaction is__________________?

   A. Arthus reaction
   B. SLE
   C. Auto immune hemolytic anemia
   D. Contact dermatitis

9. Which is type II hypersensitivity ?

   A. Anaphylaxis
   B. Delayed hypersensitivity
   C. Immune complex mediated
   D. Cytotoxic / cytolytic type

10. Brittle bone syndrome is caused by______________?

    A. Improper synthesis of procollagen
    B. Polymerisation of collagen
    C. Increase osteoclastic activity
    D. Increase fibroblastic activity