Alyssa experiences the following symptoms during the week before her period and ending within a few days after the period begins: irritability and anger, difficulty concentrating, fatigue, changes in appetite, sleeping too little, feeling overwhelmed, and physical discomfort. Alyssa is most likely suffering from .

Premenstrual dysphoric disorder

Explanation:

Premenstrual dysphoric disorder (PMDD) is a severe form of Premenstral syndrome that includes physical and behavioural symptoms that usually surface with the onset of menstruation. It is usually caused by an abnormal reaction to hormone changes related to menstrual cycle.Symptoms include  irritability or anger, Mood swings , Fatigue , Difficulty concentrating , Change in appetite , Change in appetite , Breast tenderness, Feeling out of control , Depression or feelings of hopelessness , Intense anger and conflict with other people, Decreased interest in usual activities .

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