A 24-year-old woman presents with mood swings, irritability, and frequent crying episodes. These symptoms tend to occur primarily during the week before her menstrual period and improve within a few days after the onset of menses. Her menstrual periods are regular and she denies experiencing physical symptoms such as breast tenderness or bloating. She denies any recent stressors. Which of the following is the most appropriate diagnosis for the patient's condition?
A 24-year-old woman presents with mood swings, irritability, and frequent crying episodes. These symptoms tend to occur primarily during the week before her menstrual period and improve within a few days after the onset of menses. Her menstrual periods are regular and she denies experiencing physical symptoms such as breast tenderness or bloating. She denies any recent stressors. Which of the following is the most appropriate diagnosis for the patient's condition?