What to know about severe premenstrual syndrome

A daily symptom record across menstrual cycles helps show whether symptoms consistently develop before bleeding and ease after the period begins. Severe mood symptoms may point to premenstrual dysphoric disorder and require particular attention.

PMS can present with irritability, low mood, anxiety, tearfulness, poor concentration, food cravings, bloating, headaches, tiredness, breast pain, or sleep changes. The timing matters: symptoms follow a repeating relationship with the menstrual cycle and there is usually a symptom-light interval after menstruation.

Depression, anxiety, migraine, endometriosis, thyroid problems, and perimenopause can worsen around a period or resemble PMS. A clinician considers symptoms throughout the whole month rather than assuming that any difficulty before bleeding is premenstrual syndrome.

Record mood, physical symptoms, bleeding, sleep, and impact on work or relationships each day. Bring the record to an appointment along with a list of medicines, contraception, and relevant mental-health history. This can reveal the pattern and provides a baseline for judging whether treatment helps.

Regular movement, consistent sleep, balanced meals, limiting alcohol, and stress-management strategies may reduce symptoms for some people. Clinical options can include cognitive behavioural therapy, antidepressant medication used continuously or during part of the cycle, or hormonal treatment such as a suitable combined pill. Choice depends on symptoms, pregnancy plans, medical history, and contraindications.

Arrange a medical review when symptoms repeatedly interrupt work, education, parenting, sleep, or relationships, or when self-care has not been enough. Prompt assessment is also appropriate for severe depression, panic, anger that feels difficult to control, or symptoms that continue throughout the month.

Seek emergency help for thoughts of suicide, self-harm, or harming someone else, or if you cannot stay safe. Tell a trusted person, avoid being alone, and use local emergency services or the nearest emergency department rather than waiting for the premenstrual phase to pass.

Discuss whether the symptom diary fits PMS or premenstrual dysphoric disorder, whether another condition could be contributing, and how each treatment fits your contraception or fertility goals. Ask when to review progress, which side effects matter, and what the next option would be if the first approach does not help.