Which of the following is a common feature of polymyositis?

Correct Answer: A

Rationale: Polymyositis is primarily characterized by muscle weakness without the rash seen in dermatomyositis.

Correct Answer: D

Rationale: Venom immunotherapy is recommended for patients with a history of systemic reactions and a positive skin test, as it reduces the risk of future anaphylaxis.

Correct Answer: C

Rationale: Dilute artificial formula can lead to hyponatremia and total body sodium depletion, whereas SIADH causes water retention rather than true sodium loss.

Correct Answer: D

Rationale: Hurler syndrome is a metabolic disorder and does not typically cause generalized edema in newborns. The other conditions listed are associated with fluid accumulation and edema.

Correct Answer: D

Rationale: Hurler syndrome is a metabolic disorder and does not typically cause generalized edema in newborns. The other conditions listed are associated with fluid accumulation and edema.