The exact cause of brain zaps during menopause is still unknown. What exactly happens in your body to cause such a shock sensation is therefore unclear. However, experts believe that hormonal fluctuations may play a role.
Hormonal fluctuations likely disrupt the nervous system's ability to process signals properly. Neurons in your brain may then function less effectively. This miscommunication can cause a brief shock sensation in your head or elsewhere in your body.
Oestrogen also normally helps with the production of the "happiness hormone" serotonin. When your oestrogen levels drop, your serotonin levels may also decrease. This is one of the reasons why you may feel down during menopause. But if this drop is very sudden, you may experience a shock-like sensation.
Many women describe these shocks in the head as feeling like a short circuit. While it is not a common complaint during menopause, it does occur. Due to the lack of research on brain zaps and menopause, it is difficult to determine when and how often they occur.
Research from the Dutch Pharmacovigilance Centre Lareb shows that women experience brain zaps more often than men after stopping antidepressants. It is also reported that brain zaps are more likely to occur just before falling asleep, right before a hot flush, or during sleep deprivation.