The incorrect statement regarding corticosteroids in allergy is:

Correct Answer: A

Rationale: The mechanism of action of corticosteroids is well understood; they suppress inflammation by inhibiting cytokine production and reducing immune cell activity. They also downregulate prostaglandins and leukotrienes.

Correct Answer: B

Rationale: Eczema herpeticum caused by Herpes simplex virus presents with punched-out erosions.

Correct Answer: A

Rationale: The mechanism of action of corticosteroids is well understood; they suppress inflammation by inhibiting cytokine production and reducing immune cell activity. They also downregulate prostaglandins and leukotrienes.

Correct Answer: B

Rationale: Von Willebrand disease leads to prolonged bleeding time due to defective platelet adhesion despite a normal platelet count.

Correct Answer: B

Rationale: Succinylcholine is associated with malignant hyperthermia, a life-threatening reaction with symptoms such as muscle rigidity and high fever.