Dysmenorrhea is a menstrual condition characterized by severe and frequent menstrual cramps and pain associated with menstruation. There are two types - primary dysmenorrhea, which is caused by uterine contractions, and secondary dysmenorrhea, which is caused by underlying medical conditions. Symptoms include lower abdominal pain that may radiate to the thighs and back, along with nausea, vomiting, diarrhea, and headaches. Treatment involves NSAIDs to reduce prostaglandins and relieve pain, oral contraceptives, and lifestyle changes like exercise and hot baths.