Which of the following types of shock is caused by acute infection?

Anaphylactic shock is a severe allergic reaction characterized by rapid onset of symptoms such as difficulty breathing and drop in blood pressure, but it is not caused by infection. It results from an immune response to allergens rather than pathogens, making it distinct from septic shock.

Hemorrhagic shock occurs due to significant blood loss, leading to inadequate blood volume and oxygen delivery to tissues. This type of shock is primarily related to trauma or internal bleeding, not directly linked to infections, thus differentiating it from septic shock.

Metabolic shock results from severe metabolic disturbances, such as those caused by diabetic ketoacidosis or other metabolic derangements. It is not specifically associated with infections and arises from issues related to metabolism rather than microbial invasion.

Neurogenic shock is caused by a loss of sympathetic tone in the vascular system, often due to spinal cord injury or severe head trauma. This condition is unrelated to infection and results from neurological deficits rather than an infectious process.