You’ve never had anxiety before. You’re a calm, capable person. And then, somewhere in your 40s, you start waking at 3am with your heart racing. You feel irritable for no reason. You cry at advertisements. You snap at your husband over something trivial and then feel a wave of shame.

Your doctor suggests antidepressants. Your family suggests stress management. But something doesn’t feel right about either answer.

Here’s what’s actually going on.

The Hormonal Basis of Mood

Oestrogen is not just a reproductive hormone. It plays a direct role in regulating the chemicals that control your mood, sleep, and emotional responses — including serotonin, dopamine, GABA, and norepinephrine.

During perimenopause, oestrogen levels don’t just decline — they fluctuate wildly. One week they’re high; the next they drop sharply. This unpredictability is what makes perimenopausal mood symptoms so disorienting.

When oestrogen drops suddenly:

  • Serotonin falls, triggering low mood, tearfulness, and irritability
  • GABA activity decreases, causing anxiety and difficulty relaxing
  • The stress response becomes more reactive — small things feel overwhelming
  • Sleep is disrupted, which worsens every emotional symptom

This is not a mental health condition. It is a hormonal state.

What Perimenopausal Anxiety Feels Like

It doesn’t always look like the anxiety you might imagine. Women describe it as:

  • Waking in the night with a racing heart and a sense of dread for no reason
  • Feeling on edge all day — tense, waiting for something to go wrong
  • Sudden panic in situations that never bothered them before (crowded places, driving, social events)
  • Overthinking — lying awake running through conversations and decisions
  • Physical symptoms like chest tightness, shortness of breath, or a feeling of unreality

Many women are diagnosed with generalised anxiety disorder or even bipolar disorder during perimenopause, when the root cause is hormonal.

Rage: The Symptom Nobody Talks About

One of the least discussed — and most distressing — symptoms of perimenopause is sudden, disproportionate anger.

You’re not an angry person. You’ve always been patient. And now you are shouting at your children, slamming doors, seething at your partner. Afterwards, you feel guilt and confusion. Who is this person?

She is you — experiencing a hormonal shift that has disrupted the neurological pathways that regulate emotional control. It is not a character flaw. It is not a sign you are a bad mother or wife. It is perimenopause.

Low progesterone (which also declines during perimenopause) removes a key calming effect on the brain. Combined with oestrogen fluctuations, the nervous system becomes far more reactive.

What Helps

Acknowledge it first. The single most powerful thing many women report is simply understanding that their mood symptoms have a cause. That knowledge alone reduces shame and helps them respond differently.

Track your cycle and symptoms. Even if your periods are irregular, patterns may emerge. Apps like Clue or a simple diary can reveal whether your worst days correlate with hormonal shifts.

Prioritise sleep aggressively. Sleep deprivation multiplies every mood symptom. Treating night sweats and sleep disruption often significantly improves mood.

Reduce alcohol. Alcohol disrupts oestrogen metabolism and worsens mood instability, anxiety, and sleep — even in small amounts.

Speak to a menopause-informed doctor. For significant mood symptoms, hormone replacement therapy (HRT) or targeted support may be appropriate. A doctor who understands perimenopause will not simply prescribe antidepressants without first considering hormonal factors.

Don’t carry this alone. Whether it’s a trusted friend, a companion like The Second Spring, or a professional — isolation makes mood symptoms significantly worse.

A Note on Antidepressants

Some women do benefit from antidepressants during perimenopause — but they are often prescribed instead of hormonal evaluation, rather than alongside it. If you’ve been offered antidepressants for mood symptoms and no one has discussed your hormone levels or perimenopause, it’s worth asking the question directly.

You deserve a complete picture of what’s happening in your body.

Worried about mood changes? Talk to The Second Spring privately — no login, no judgement. Start here →