Around 50% of women affected by migraines report that their migraine attacks coincide with their period. Two forms can be distinguished during the diagnosis: 5-10% have a purely menstrual migraine where attacks only occur one to two days before or after menstruation in at least two out of three menstrual cycles. With menstrually-related migraines on the other hand, the attacks also occur frequently one to two days before menstruation but also at various other points in the cycle. M-sense can analyse whether your migraine is menstrual or menstrually-related.

For over 40 years, there has been a theory that sinking oestrogen levels cause migraine attacks. The most recent studies also seem to verify this. However, the exact physiological relationship still remains unexplained. It is assumed that hormonal fluctuations caused by the menstrual cycle are generally a physical strain on the body.