Dimensional Affective Sensitivity to Hormones across the Menstrual Cycle (DASH-MC)
🎧 Prefer to listen? This topic is covered in Episode 6 of the Sirona Health Podcast:Why Doesn't My PMDD Look Like Everyone Else's?
For years, women have been told that mood changes around the menstrual cycle are simply "PMS" or "hormones." Yet anyone who works with women experiencing PMDD, perimenopause, ADHD, anxiety, depression, or trauma-related symptoms knows the reality is far more complex.
Some women become intensely irritable after ovulation. Others experience profound depression just before or during their period. Some notice impulsive behaviours, increased alcohol use, or risk-taking around ovulation itself.
A groundbreaking framework published in 2025 offers a new way of understanding these patterns. Rather than viewing menstrual-related mood changes as a single condition, researchers propose that there are multiple forms of hormone sensitivity, each driven by different hormonal events across the menstrual cycle.
This model is called DASH-MC: Dimensional Affective Sensitivity to Hormones across the Menstrual Cycle.
It may fundamentally change how we think about PMDD, premenstrual worsening of existing mental health conditions, and hormone-related mood symptoms more broadly.
The Problem with the Traditional PMDD Model
PMDD has traditionally been viewed as a condition where symptoms occur in the week before a period and resolve shortly after menstruation begins.
However, clinicians have long observed that many women don't fit this pattern.
Some experience worsening depression during their period.
Others find that their ADHD symptoms become significantly worse at certain points in the cycle.
Women with anxiety, PTSD, bipolar disorder, eating disorders, borderline personality disorder and substance use disorders frequently report cyclical symptom changes that don't neatly fit PMDD criteria.
Research now suggests that these experiences are not unusual.
In fact, cyclical worsening of symptoms appears to occur across a wide range of psychiatric and neurodevelopmental conditions, suggesting that hormone sensitivity may be a transdiagnostic process rather than a single diagnosis.
Three Different Types of Hormone Sensitivity
The DASH-MC framework proposes three broad patterns of hormone sensitivity.
Type 1: Sensitivity to Progesterone and Allopregnanolone After Ovulation
This is the pattern most people recognise as "classic PMDD."
After ovulation, progesterone rises. As progesterone increases, the brain produces a neurosteroid called allopregnanolone.
In most people, allopregnanolone has calming effects.
In hormone-sensitive individuals, however, the brain appears to respond abnormally.
Instead of producing calmness, these hormonal changes may trigger:
Irritability
Anger
Emotional reactivity
Anxiety
Feeling overwhelmed
Rejection sensitivity
Sensory sensitivity
Relationship conflict
Rage episodes
Many women describe feeling as though they become a different person after ovulation.
The research suggests that the issue is not having abnormal hormone levels. Instead, the brain responds differently to completely normal hormonal fluctuations.
This pattern often improves rapidly once menstruation begins.
What This Looks Like in Real Life
A woman may feel well during the follicular phase.
Within a few days of ovulation she becomes increasingly:
Irritable
Sensitive to criticism
Overstimulated by noise
Easily angered
Emotionally reactive
Relationships often suffer during this phase because interactions that feel manageable at other times of the month suddenly feel unbearable.
This is one reason many women with PMDD report that irritability is actually more disabling than low mood.
Type 2: Sensitivity to Falling Oestrogen Around Menstruation
A second pattern appears to be driven by falling or low oestrogen.
This pattern is often overlooked because symptoms occur later in the cycle.
Instead of symptoms beginning immediately after ovulation, they emerge around the start of menstruation and may continue into the early follicular phase.
Typical symptoms include:
Low mood
Hopelessness
Tearfulness
Brain fog
Poor concentration
Memory difficulties
Fatigue
Loss of motivation
Increased suicidal thoughts
Researchers note that this pattern may be particularly relevant for women with:
Depression
ADHD
Trauma histories
Existing cognitive difficulties
Unlike the first subtype, symptoms may not disappear immediately once bleeding starts. They often continue for several days into the next cycle.
Why Oestrogen Matters for the Brain
Oestrogen is not simply a reproductive hormone.
It influences:
Dopamine
Serotonin
Executive function
Memory
Attention
Learning
Reward processing
When oestrogen levels fall rapidly, some women's brains appear particularly vulnerable.
This may help explain why women with ADHD often report worsening concentration, working memory and emotional regulation around their period.
It may also explain why many women experience depressive symptoms during perimenopause, when oestrogen fluctuations become more dramatic and unpredictable.
Type 3: Sensitivity to Oestrogen Surges Around Ovulation
The third subtype is perhaps the most surprising.
Most women feel better around ovulation.
Mood often improves, energy increases and confidence rises.
However, some women appear particularly sensitive to the surge in oestrogen that occurs before ovulation.
In these women, increased dopamine activity may lead to:
Impulsivity
Increased alcohol consumption
Risk-taking
Gambling behaviours
Excessive spending
Increased sexual drive
Difficulties controlling urges
For women with underlying vulnerabilities such as ADHD, addiction, bipolar disorder or impulsive personality traits, these hormonal effects may become clinically significant.
Why This Matters for PMDD Treatment
One of the most important implications of the DASH-MC model is that not all hormone-sensitive women have the same underlying biology.
Two women may both say:
"I feel awful around my period."
Yet one may have a progesterone-related irritability syndrome, while another has an oestrogen-withdrawal depression syndrome.
If the underlying mechanisms differ, it makes sense that treatments will not work equally well for everyone.
This may explain why:
Some women respond brilliantly to SSRIs.
Some improve dramatically on ovulation suppression.
Some benefit from transdermal oestrogen.
Some require a combination approach.
Some continue to struggle despite apparently "standard" PMDD treatment.
Future research may allow us to tailor treatments according to an individual's specific hormone sensitivity profile rather than applying a one-size-fits-all approach.
What This Means for Women with ADHD
One particularly exciting aspect of this framework is its relevance to ADHD.
Many women with ADHD report cyclical worsening of:
Concentration
Organisation
Emotional regulation
Impulsivity
Motivation
The DASH-MC model suggests that fluctuations in oestrogen may directly influence dopamine systems involved in executive functioning.
This could help explain why ADHD symptoms often worsen before menstruation and improve around ovulation.
For some women, understanding these predictable fluctuations can be transformative, allowing adjustments to workload, expectations, medication timing and self-care strategies.
The Future of Women's Mental Health
For decades, women's cyclical mood symptoms have often been minimised or dismissed.
The DASH-MC framework recognises something many women have known intuitively for years:
Hormones matter, but they do not affect everyone in the same way.
The future of women's mental health is unlikely to be about asking whether symptoms are "just hormones."
Instead, it will involve understanding which hormonal events trigger symptoms, how an individual's brain responds to those changes, and how treatment can be tailored accordingly.
That represents a significant step forward in precision medicine for women.
Key Takeaway
If your symptoms consistently change at specific points in your menstrual cycle, there may be an identifiable biological pattern behind them.
Tracking symptoms prospectively across at least two cycles can provide valuable clues about whether symptoms relate to:
Post-ovulation progesterone and allopregnanolone changes
Falling oestrogen around menstruation
Oestrogen surges around ovulation
Or a combination of all three
Understanding your personal hormone sensitivity profile may be one of the most important steps towards finding effective treatment.