Oligomenorrhea

Template:DiseaseDisorder infobox Oligomenorrhea is the medical term for infrequent or light menstrual periods in women of child-bearing age. Oligomenorrhea can also be a result of prolactinomas (adenomas of the anterior pituitary). May also be caused by thyrotoxicosis and Graves disease.

(The medical term for a total cessation of the menstrual period is amenorrhea while unusually heavy periods are called menorrhagia)

Cardiovascular	No underlying causes
Chemical/Poisoning	No underlying causes
Dental	No underlying causes
Dermatologic	No underlying causes
Drug Side Effect	Levonorgestrel, Norgestrel and Ethinyl estradiol
Ear Nose Throat	No underlying causes
Endocrine	Multiple endocrine neoplasia type 1
Environmental	No underlying causes
Gastroenterologic	No underlying causes
Genetic	No underlying causes
Hematologic	No underlying causes
Iatrogenic	No underlying causes
Infectious Disease	No underlying causes
Musculoskeletal/Orthopedic	No underlying causes
Neurologic	No underlying causes
Nutritional/Metabolic	No underlying causes
Obstetric/Gynecologic	No underlying causes
Oncologic	No underlying causes
Ophthalmologic	No underlying causes
Overdose/Toxicity	No underlying causes
Psychiatric	No underlying causes
Pulmonary	No underlying causes
Renal/Electrolyte	No underlying causes
Rheumatology/Immunology/Allergy	No underlying causes
Sexual	No underlying causes
Trauma	No underlying causes
Urologic	No underlying causes
Miscellaneous	No underlying causes