Which of the following statements about bronchial

Question 1 of 5

Which of the following statements about bronchial asthma is correct?

A. TH1 immune response B. Eosinophil is the main effector cell C. Increased serum IgA levels D. Viral infection is the main cause

Correct Answer: B

Rationale: Asthma is a TH2-mediated inflammatory condition where eosinophils play a key role in airway hyperresponsiveness. Increased IgE, not IgA, is associated with allergic asthma, and viral infections can trigger but do not cause asthma.

Question 2 of 5

Spondyloarthritis may be overlapped clinically with other forms of juvenile idiopathic arthritis (JIA). Clinical manifestations that help distinguish spondyloarthritis from other forms of juvenile arthritis include all the following EXCEPT

A. arthritis of the sacroiliac joints B. arthritis of the hips C. enthesitis D. uveitis

Correct Answer: D

Rationale: Uveitis is more common in oligoarticular JIA.

Question 3 of 5

Which of the following clinical signs is pathognomonic of rubella?

A. Severe prodromal stage B. Circumoral pallor C. Maculopapular rash D. Post auricular lymphadenopathy

Correct Answer: D

Rationale: Post-auricular lymphadenopathy is a classic early sign of rubella, differentiating it from measles, which presents with Koplik spots.

Question 4 of 5

Which form of hypersensitivity reaction is characterized by antigen-antibody reactions on the cell membrane with activation of complement and destruction of the involved cell?

A. type I hypersensitivity B. type II hypersensitivity C. type III hypersensitivity D. type IV hypersensitivity

Correct Answer: B

Rationale: Type II hypersensitivity involves antibody-mediated cell destruction via complement activation.

Question 5 of 5

Exfoliative dermatitis may develop in patients with atopic dermatitis and extensive skin involvement, usually caused by inappropriate therapy or superinfection with

A. E. coli B. Herpes zoster C. Herpes simplex D. Streptococcal pyogen

Correct Answer: C

Rationale: Exfoliative dermatitis in atopic dermatitis patients can be due to superinfection, with Herpes simplex virus being a common cause (eczema herpeticum). It presents as widespread vesicular eruptions, requiring antiviral treatment to prevent complications like systemic dissemination.