Primary dysmenorrhea is a painful menstruation without demonstrable pelvic pathology.
Symptoms include intermittent painful spasms, crampy labor-like pain localized over the lower abdomen and the suprapubic area which may radiate to the lower back or inner thighs.
The pain may also be described as a dull ache or as a stabbing pain.
Accompanying symptoms include nausea and vomiting, diarrhea, headaches, lightheadedness, fatigue, fever, muscle cramps, nervousness, fainting and poor sleep quality.
Prolonged cyclical and continuous treatment regimens of dydrogesterone produce similar reduction in the severity of chronic pelvic pain and dysmenorrhoea, resulting in marked improvements in quality of life and sexual wellbeing, according to a study.