Which is not a sign of moderate to severe airway obstruction that might result from allergic response?

Correct Answer: A

Rationale: Dennie lines are not a sign of airway obstruction; they are associated with atopic dermatitis.

Correct Answer: B

Rationale: It is recommended to give a brightly colored toy or rattle to a 2-month-old at around 4 months of age. At this stage, grasping has begun as a deliberate act, and the infant can grasp, hold, and begin shaking objects to produce noise.

Correct Answer: D

Rationale: Atypical pneumonia, caused by Mycoplasma pneumoniae and Chlamydia pneumoniae, is more common in school-aged children. It presents with dry cough, mild fever, and extrapulmonary manifestations such as rash or hemolysis.

Correct Answer: D

Rationale: Neuroleptic antipsychotics typically cause extrapyramidal side effects like bradykinesia, hyperthermia (neuroleptic malignant syndrome), tardive dyskinesia, and sedation. Inappropriate ADH secretion is not commonly associated with these medications.

Correct Answer: C

Rationale: Wilson's disease is an autosomal recessive disorder with defective copper excretion, leading to low ceruloplasmin and copper accumulation.