How to Track PMDD Symptoms — A Practical Guide

Published 16 April 2026

Why tracking matters: PMDD (Premenstrual Dysphoric Disorder) is notoriously difficult to diagnose because its symptoms overlap with depression, anxiety, and bipolar disorder. The single most useful thing you can do for your diagnosis and treatment is show your doctor a clear record of symptoms mapped against your cycle — proving the luteal-phase pattern that defines PMDD.

Most GPs and psychiatrists will ask you to track for at least two consecutive cycles before confirming a PMDD diagnosis. Here's what to track, when, and how to make the data useful.

What to track every day

PMDD affects mood, body and behaviour differently in each person, but these categories cover the diagnostic criteria:

Mood: Sadness, hopelessness, sudden crying, irritability, anger, anxiety, feeling overwhelmed, emotional sensitivity
Physical: Bloating, breast tenderness, headaches, joint/muscle pain, fatigue, appetite changes, sleep disruption
Cognitive: Difficulty concentrating, brain fog, forgetfulness, feeling "not yourself"
Behavioural: Social withdrawal, loss of interest in activities, relationship conflict, reduced motivation

Rate each symptom on a simple severity scale — 0 (absent), 1 (mild), 2 (moderate), 3 (severe). Don't overthink it. The goal is consistency, not precision.

When to track

Track every day, not just when you feel bad. PMDD's defining feature is the contrast between the follicular phase (period through ovulation, typically days 1–14) and the luteal phase (ovulation through period, days 15–28). If your symptoms are consistently severe in the luteal phase and absent or mild in the follicular phase, that's the PMDD pattern.

Without follicular-phase data showing you feel fine, a doctor can't distinguish PMDD from general depression. The "good days" are as important as the bad ones.

How long to track

A minimum of two full cycles (roughly 2 months). Three is better. The ISPMD (International Society for Premenstrual Disorders) recommends daily prospective tracking — meaning you log each day as it happens, not from memory at the end of the month. Memory is unreliable; real-time logging is what clinicians trust.

What to do with the data

Show your GP: A visual chart showing symptom severity mapped to cycle days is the single most powerful tool in a PMDD consultation. Many GPs have never seen one and it immediately shifts the conversation from "maybe it's stress" to "this is clearly cyclical".
Track treatment effects: If you start SSRIs, hormonal treatment, or supplements, keep tracking. The chart shows whether symptoms improve, which ones respond, and whether timing matters (continuous vs luteal-only dosing).
Share with your partner or support network: PMDD strains relationships. A shared understanding of the pattern — "days 18–25 are hard, days 1–14 are fine" — replaces confusion with predictability.

Try Lunaire: PMDD Tracker

Daily symptom logging with cycle-phase mapping. No account, no cloud, all data stays on your device.

Learn more

Tips for sticking with daily tracking

Set a daily reminder. Same time each day — bedtime works well because you're reflecting on the whole day.
Keep it under 60 seconds. If logging takes longer than a minute, you'll stop doing it. Tap severity ratings, not write paragraphs.
Don't judge the data. Bad days aren't failures. They're data points. The worse you feel, the more valuable that day's log is for your diagnosis.
Track on good days too. It feels pointless logging "everything fine" but that's exactly what proves the cyclical pattern.