The purpose of this trial is to investigate the effect and safety of auricular acupressure on adolescent and young women with PCOS. Subjects will be randomly assigned in to two arms: Auricular acupressure arm and placebo auricular acupressure, both arms will be treated for three months. Body mass index, oral glucose tolerance test, hormonal profile and metabolic profile will be determined.

Inclusion Criteria:

• Women aged between 12 and 25 years.
• Diagnosis of PCOS according to the modified Rotterdam criteria.
• 2 years after menarche.
• Body mass index (BMI) equal to or greater than 23 kg/m*m.

Exclusion Criteria:

• Administration of other medications known to affect reproductive function or metabolism within the past three months, including oral contraceptives, Gonadotropin-releasing hormone (GnRH) agonists and antagonists, anti androgens, gonadotropins, anti-obesity drugs, Chinese herbal medicines, anti diabetic drugs such as metformin and thiazolidinediones, somatostatin, diazoxide, and calcium channel blockers.
• Patients with other endocrine disorders including 21-hydroxylase deficiency, hyperprolactinemia, uncorrected thyroid disease, suspected Cushing's syndrome.
• Patients with known severe organ dysfunction or mental illness.