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PMS and PMDD
PMS and PMDD reflect a brain sensitive to normal hormone shifts. We steady the brain signal, the gut, blood sugar, and estrogen clearance, and map your full hormone pathway across the cycle.
What you may be noticing
For a week or two before your period, you feel like a different person. Irritability, tears, anxiety, or despair arrive on schedule. Bloating, water retention, breast tenderness, cravings, acne, headaches, and poor sleep join in. With PMDD, mood changes can be severe enough to disrupt relationships and work, and then lift within days of bleeding.
Why it is rarely one thing
PMS is common. It is not normal to feel unwell for a quarter of every month. PMDD in particular is understood not as a hormone level problem but as an unusual sensitivity of the brain to normal hormonal change.
Progesterone is converted into a calming brain molecule called allopregnanolone, which acts on GABA receptors. In some women the brain responds atypically to the rise and fall of this signal, producing anxiety and low mood instead of calm. Serotonin signaling, inflammation, and blood sugar shape that sensitivity further.
I approach this as a hormonal and gut-brain pattern, not an isolated psychiatric event. Your brain directs the cycle and also reacts to it, so the question becomes: why is the system so reactive to its own rhythm, and what can steady it? A nervous system already running in protection mode, a gut that recirculates estrogen, and a liver with a heavy load all amplify the swing. Each of these is something we can support.
If you have thoughts of suicide or self-harm, even if they come only before your period, please call or text 988 in the United States or go to the nearest emergency room.
Patterns we look for
- Progesterone, allopregnanolone signaling, and GABA sensitivity.
- Ovulation quality, since progesterone depends on it.
- Estrogen balance, metabolism, and clearance.
- The gut microbiome and estrogen recirculation.
- Serotonin pathways and their building blocks.
- Inflammation.
- Blood sugar instability in the luteal phase.
- Magnesium, B6, calcium, zinc, and vitamin D.
- Comprehensive thyroid function.
- Cortisol rhythm and stress load.
- Histamine and mast cell activity.
- Frontal and limbic balance.
How I evaluate it
A comprehensive functional neurological exam assesses autonomic and frontal-limbic regulation, which shapes emotional reactivity.
I prefer hormone testing that maps the whole pathway, precursors, active hormones, metabolites, and cortisol rhythm, through dried urine and saliva timed to your cycle. Labs may also include a comprehensive thyroid panel, ferritin, magnesium, vitamin D, fasting insulin, inflammatory markers, and stool testing when gut symptoms are present. A daily symptom chart over two cycles clarifies the pattern and distinguishes PMDD from an underlying mood condition that worsens premenstrually.
How we address it
- Track your cycle so the plan follows its phases.
- Regulate the nervous system first with vagal, breath, and brain-based exercises that strengthen frontal regulation.
- Stabilize blood sugar, especially in the luteal phase.
- Open drainage and support the gut and liver for healthy estrogen clearance.
- Reduce inflammation and endocrine-disrupting exposures.
- Restore magnesium, B6, and other nutrients with targeted categories of support.
- Support serotonin and GABA balance alongside any medication from your prescribing physician.
Your cycle can become a rhythm you live with gracefully, not a countdown you dread.
Book your Comprehensive Functional Medicine Eval/Neurological Exam today to discover what the contributing root causes are that are underlying your health concerns.