A patient develops urticaria and pruritus 5 days after beginning phenytoin for treatment of seizures.Which type of reaction is the patient most likely experiencing?

A) Mild adverse reaction
B) Dose-related adverse reaction
C) Toxic reaction
D) Anaphylactic reaction

Urticaria

A skin condition commonly known as hives, characterized by red, itchy, raised welts on the skin's surface that may result from allergic reactions or other causes.

Phenytoin

An anticonvulsant medication used to control seizures by slowing down impulses in the brain that cause seizures.

Pruritus

A sensation that causes the desire or reflex to scratch due to irritation of the skin.