dysmenorrhea and pms patricia crowley tcd department of obstetrics and gynaecology
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Dysmenorrhea and PMS
Patricia Crowley TCD Department of Obstetrics and Gynaecology
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Primary Spasmodic Dysmenorrhea
• Painful menstruation without underlying pathology
• Commonest in teens/early twenties
• Onset 1 or more years after menarche
• Associated vomiting and faintness
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Secondary Dysmenorrhea
• Painful menses secondary to pathology
• Pain may begin before bleeding and may last for entire duration
• Commoner 30s and 40s
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Secondary Dysmenorrhea
• Endometriosis
• Fibroids
• Adenomyosis
• Pelvic Inflammatory Disease
• Uterine anomalies
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History Taking
• Timing
• Severity
• Disruption in life-style
• Previous gynae history
• Contraceptive needs
• Wish for fertility
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Examination
• Vaginal exam not essential in young female with ? Primary dysmenorrhea
• Vagina -?septum/ tenderness in POD
• Uterus- size / mobility/ position/tenderness
• Adnexa –tenderness/ enlargement
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Investigations
• Transabdominal ultrasound with full bladder
• Transvaginal ultrasound –increased sensitivity
• Laparoscopy –gold standard for endometriosis
• Risks versus benefits
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Management Primary Spasmodic Dysmenorrhea
• Education
• Prostaglandin synthetase inhibitors
• Combined oral contraceptive pill-choose a progestagen dominant pill
• “Bicycle” or “Tricycle” pill
• Failure to respond to Pill increases likelihood of underlying pathology
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Premenstrual Syndrome
• Physiological premenstrual change
• All but 5% of females experience one or more symptom
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Symptoms
• Physical –bloating/breast tenderness/headache
• Psychological-agression/agitation/crying bouts/depression/irritability
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Measurement and Diagnosis
• Cyclical symptoms –character, timing, severity
• Degree of underlying psychological dysfunction
• Degree of disruption of lifestyle
• Usually self documented using diary/calendar
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Aetiology
• No measurable abnormality in female sex hormones or prolactin
• Oophorectomy abolishes symptoms
• Cyclical HRT reproduces symptoms
• ? Abnormal endorphins
• ? Change in serotonin metabolism
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Dimmock et al Lancet 2000
Treatment
• 15 RCTs SSRIs vs placebo
• SSRIs improve physical and psychological symptoms
• Both intermittent and continuous therapy beneficial
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Treatment
• Temporary or permanent abolition of hormonal cycle
• GnRH analogue
• Hysterectomy and Oophorectomy
• Progesterone/progestagens shown to be ineffective