Mood Swings & Irritability
What it feels like
Sudden waves of frustration, tearfulness, or rage that feel disproportionate to the situation. You might snap at family members and then feel guilty, or swing from contentment to sadness within hours. Many women describe feeling like a completely different person.
Why it happens
Oestrogen directly influences serotonin and dopamine — the "feel-good" neurotransmitters. As oestrogen fluctuates unpredictably during perimenopause, so does your brain chemistry and emotional regulation. Progesterone, which has a calming, anti-anxiety effect, also declines — removing a key buffer against stress.
What can help
- Track mood changes against your cycle to spot patterns
- Regular moderate exercise (even a 30-minute walk) significantly stabilises mood
- Reduce caffeine and alcohol, which amplify hormonal mood swings
- Speak to your doctor if mood changes are severe — therapy and HRT can both help