Dysmenorrhea (dysfunction in the menstrual cycle).

Opsomenorrhea (long cycle, normal flow)

Proiomenorrhea (short cycle, normal flow)

Hypermenorrhea (normal cycle, large amount of flow)

Hypomenorrhea (normal cycle, small amount of flow)

Polymenorrhea (normal cycle, flow lasts for long time)

Oligomenorrhea (normal cycle, flow lasts for short time)