Why ADHD Can Suddenly Feel Worse in Perimenopause

Many women arrive in their 40s feeling as though their brain has suddenly stopped working.

They describe losing focus, feeling overwhelmed by simple tasks, forgetting things constantly, becoming emotionally reactive, or feeling unable to cope with stress in ways they previously could.

Often they are told it’s anxiety…..Or burnout…Or simply  just “part of getting older.”

But for many women, particularly those with ADHD traits, the picture is far more challenging.

Hormones don’t just affect the body…they affect the brain

Oestrogen and progesterone are not simply reproductive hormones. They interact directly with the brain’s chemistry and nervous system.

Oestrogen influences neurotransmitters such as dopamine and serotonin, which are crucial for attention, motivation, mood and executive functioning. Oestrogen also influences glutamate & histamine, which can significantly affect mood.

Progesterone, meanwhile, acts as a neurosteroid. Its metabolite allopregnanolone modulates the GABA system, the brain’s primary calming neurotransmitter,  helping regulate stress responses and emotional reactivity.

When these hormones fluctuate, the effects can ripple through the entire nervous system.

What happens during perimenopause

Perimenopause is not simply a slow decline in hormones. It is a period of significant hormonal volatility. It is full body recalibration.

Oestrogen levels can fluctuate wildly from month to month, while progesterone often begins declining earlier due to more frequent anovulatory cycles (form around 35 years onwards).

For women with ADHD, this can create what I describe as a perfect storm… a time when fluctuating hormones collide with the very neurotransmitter systems already involved in attention, emotional regulation and stress tolerance.

This shift in hormone ratios can affect brain function in several ways:

• Neurotransmitter signalling becomes less stable

• Stress responses become more reactive

• Sleep often becomes lighter and more fragmented

• Emotional regulation becomes harder, with RSD amplifying.

For many women, it feels as though their ADHD has suddenly become worse overnight. The strategies that used to work, simply don’t anymore.

In reality, the underlying neurobiology has shifted.

Why ADHD women are particularly affected

ADHD already involves differences in neurotransmitter regulation and executive function networks within the brain. When hormonal changes disrupt these same systems, the effects can compound.

Research increasingly supports the idea that ADHD symptoms in women are sensitive to hormonal fluctuations. For example, Roberts et al. (2018) found that ADHD traits can vary across the menstrual cycle in relation to reproductive steroid changes.

Similarly, Kooij (2023) highlights how ADHD symptoms in women may fluctuate across the lifespan in response to hormonal transitions such as puberty, the menstrual cycle, pregnancy and perimenopause.

More recently, Martel et al. (2024) proposed the Multiple Hormone Sensitivity Theory, suggesting that some individuals with ADHD may be particularly sensitive to changes in reproductive hormones, which may influence attention, mood and emotional regulation.

This all helps explain why many women first seek ADHD assessment during midlife,  not because ADHD suddenly appeared, but because hormonal shifts have unmasked difficulties that were previously manageable.

This pattern is something I explored in my Perfect Strom Study, looking at Perimenopause & ADHD. In this research, hormone levels are tracked across multiple menstrual cycles using the Mira home hormone monitoring system alongside trait tracking of attention, emotional regulation and cognitive load.

Early observations suggest that fluctuations in oestrogen and progesterone may closely mirror changes in focus, overwhelm and emotional sensitivity across the cycle. While research in this area is still emerging, both clinical experience and early data suggest hormonal volatility may significantly influence how ADHD presents during midlife.

Stabilising before optimising

In clinical practice, one of the most helpful starting points is not immediately adding more complex protocols or supplements.

Instead, the focus is often on stabilising the physiological foundations that support the brain.

This may include:

• Initially, supporting progesterone levels where appropriate

• Improving blood sugar regulation

• Reducing nervous system overload

• Addressing sleep disruption & circadian rhythm.

• Ensuring adequate nutritional support

These factors all influence neurotransmitter  signalling, stress physiology and overall neurological stability.

Without addressing these foundations first, even well-intended interventions can feel overwhelming or ineffective to an already overburdened system.

The importance of education and informed choice

One of the biggest frustrations women describe is feeling dismissed or misunderstood when these changes occur.

Many are told their symptoms are purely psychological, or that standard treatments should work the same way they always have. But the interaction between hormones, brain chemistry, neurodiversity and nervous system regulation is complex. Understanding these connections gives women language for what they are experiencing and allows them to make more informed choices about their health.

Perimenopause can feel destabilising, particularly for women navigating ADHD,  but with the right knowledge and support, it can also be a time of greater clarity and self-understanding. And that understanding is often the first step towards finding steadier ground again.

References

Roberts, B. et al. (2018). Reproductive Steroids and ADHD Traits Across the Menstrual Cycle.

Kooij, J. (2023). Hormonal Sensitivity of Mood Traits in Women with ADHD Across the Lifespan.

de Jong, C. et al. (2023). Female-Specific Pharmacotherapy in ADHD: Premenstrual Adjustment of Psychostimulant Dosage.

Martel, M. et al. (2024). ADHD and the Menstrual Cycle: Multiple Hormone Sensitivity Theory. University of Kentucky.

Blasco-Fontecilla, H. (2023). Is Histamine and Not Acetylcholine the Missing Link between ADHD and Allergies? Speer Allergic Tension Fatigue Syndrome Re-Visited.https://pmc.ncbi.nlm.nih.gov/articles/PMC10455974/