Editing Menstruation (section)

=== Interactions with other conditions ===
Known interactions between the menstrual cycle and certain health conditions include:

* Some women with [[Neurology|neurological conditions]] experience increased activity of their conditions at about the same time during each menstrual cycle. For example, drops in estrogen levels may trigger [[migraines]],{{medical citation needed|date=February 2021}} <ref>{{cite journal | vauthors = Reddy N, Desai MN, Schoenbrunner A, Schneeberger S, Janis JE | title = The complex relationship between estrogen and migraines: a scoping review | journal = Systematic Reviews | volume = 10 | issue = 1 | pages = 72 | date = March 2021 | pmid = 33691790 | pmc = 7948327 | doi = 10.1186/s13643-021-01618-4 | doi-access = free }}</ref> especially when the woman who has migraines is also taking the birth control pill.
* Many women with [[epilepsy]] have more seizures in a pattern linked to the menstrual cycle; this is called "[[catamenial epilepsy]]".<ref name="pmid18164632">{{cite journal | vauthors = Herzog AG | title = Catamenial epilepsy: definition, prevalence pathophysiology and treatment | journal = Seizure | volume = 17 | issue = 2 | pages = 151–159 | date = March 2008 | pmid = 18164632 | doi = 10.1016/j.seizure.2007.11.014 | s2cid = 6903651 | doi-access = free }}</ref> Different patterns seem to exist (such as seizures coinciding with the time of menstruation, or coinciding with the time of ovulation), and the frequency with which they occur has not been firmly established.
* Research indicates that women have a significantly higher likelihood of [[anterior cruciate ligament]] injuries in the pre-ovulatory stage, than post-ovulatory stage.<ref>{{cite journal | vauthors = Renstrom P, Ljungqvist A, Arendt E, Beynnon B, Fukubayashi T, Garrett W, Georgoulis T, Hewett TE, Johnson R, Krosshaug T, Mandelbaum B, Micheli L, Myklebust G, Roos E, Roos H, Schamasch P, Shultz S, Werner S, Wojtys E, Engebretsen L | display-authors = 6 | title = Non-contact ACL injuries in female athletes: an International Olympic Committee current concepts statement | journal = British Journal of Sports Medicine | volume = 42 | issue = 6 | pages = 394–412 | date = June 2008 | pmid = 18539658 | pmc = 3920910 | doi = 10.1136/bjsm.2008.048934 }}</ref>