Rate each symptom over the week before your period. Your score helps you understand the severity of your PMS and whether it might be worth speaking to your GP.
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PMS (Premenstrual Syndrome) affects up to 75% of women to some degree. Symptoms occur in the luteal phase (typically the 1–2 weeks before your period) and resolve once your period starts.
PMDD (Premenstrual Dysphoric Disorder) is a more severe form, affecting around 5% of women. It involves significant mood changes — such as severe depression, anxiety, or anger — that meaningfully disrupt daily life. PMDD is a recognised medical condition and is very treatable.
A high score on this tool does not diagnose either condition — but it can be a helpful starting point for a conversation with your GP.
PMS (premenstrual syndrome) refers to physical and emotional symptoms that show up in the luteal phase — the roughly two weeks between ovulation and your period — and ease once bleeding starts. This tool maps your symptoms against that phase.
Symptoms range from bloating, tender breasts, and headaches to mood changes, irritability, and low energy. They're driven by the natural hormone shifts after ovulation and vary widely from person to person and month to month.
This tool gives general information and estimates only — it is not medical advice. If you have concerns, speak to a healthcare professional.
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Explore the calculators →Premenstrual syndrome is a cluster of physical and emotional symptoms — like bloating, mood changes, and fatigue — that appear in the days before your period and usually fade once it begins.
Typically in the luteal phase, the one to two weeks after ovulation and before your period. They usually peak in the final few days beforehand and settle once bleeding starts.
PMDD (premenstrual dysphoric disorder) is a severe form where emotional symptoms — intense low mood, anxiety, or irritability — significantly disrupt daily life. If symptoms feel overwhelming, it's worth speaking to a doctor.
Regular exercise, good sleep, reducing salt, caffeine and alcohol, and stress management help many people. If symptoms interfere with your life, a healthcare professional can discuss further options.