The pain associated with endometriosis is quite predictable and manageable. It is cyclical and usually is worst with ovulation or menstruation.
If women are unlucky (and have unrecognised severe disease) – it may occur for more than three weeks in any four-week cycle, as the deposits continue to accumulate and grow.
Endometriosis/severe period pain can be managed by simple oral analgesia once the diagnosis is confirmed. These will suppress the symptoms but not provide a cure. They are useful as bridging agents only, buying time until more effective treatment can be made available.
For acute pain that is genuinely 10/10, intramuscular medications can be administered by a GP or at an Emergency Department where safe monitoring can occur.
For chronic pain, medications that reduce the available oestrogen in the female circulation may be of use too.