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See menses.

[Greek katamēnia, from neuter pl. of katamēnios, monthly : kata-, according to, per; see cata- + mēn, month; see mē- in Indo-European roots.]

cat′a·me′ni·al adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.catamenial - of or relating to menstruation or the menses; "menstrual period"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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[4] Thoracic endometriosis syndrome refers to the clinical manifestations of the cyclical changes associated with the ectopic endometrial tissue, most frequently catamenial (menstrual) pneumothorax, followed by catamenial haemothorax, catamenial haemoptysis and endometriotic pulmonary nodules, in descending order of frequency.
When detected in a female patient, it should be considered as a rare cause, such as lymphangioleiomyomatosis or catamenial pneumothorax (4).
Brockington, Menstrual Psychosis and the Catamenial Process, Every Press, Bredenbury, UK, 2008.
Patients usually have catamenial symptoms, occurring within 24-48 hours of onset of menses.
** Be familiar with the difficulties in assessing and managing seizure disorders in women with epilepsy, including catamenial epilepsy, contraception, pregnancy, teratogenicity, polycystic ovarian syndrome, menopause.
Additionally, diaphragmatic endometriosis can sometimes occur in association with catamenial hemothorax or pneumothorax, the risk of which is unpredictable.
In young women with catamenial sciatica, the suspicion of sciatic nerve endometriosis should be considered.
(25) Premenstrual dysphoric disorder (PMDD) and the milder premenstrual syndrome (PMS), migraines and even catamenial epilepsy are importantly involved with ALLO and THDOC.
As happened for hypothalamic gelastic seizure [27] and for catamenial epilepsy [28], we can now only speculate that GnRHa could not only influence the development of pubertal progression but also help in controlling the potential concomitant deterioration of neurologic symptoms as seizures in CP.
Airway diseases (COPD, severe asthma) and infections of the chest (tuberculosis, pneumonia, etc.) are the most common causes of secondary spontaneous pneumothorax, but virtually every other pulmonary disease process has been associated with secondary spontaneous pneumothorax (interstitial lung diseases, malignancy, catamenial pneumothorax, pulmonary infarction, pulmonary haemorrhage, pulmonary alveolar proteinosis, tuberous sclerosis, etc.).