What are the symptoms of PCOS?

Last reviewed June 1, 2026 by Dr. Sapna Jadhav, General Physician. Sources from ACOG, NHS, Mayo Clinic, CDC, NICE, NIH, Cochrane, and peer-reviewed journals.

Bottom linePCOS symptoms include irregular or missed periods, excess facial or body hair (hirsutism, in up to 70%), persistent acne, scalp hair thinning, weight gain, insulin resistance, mood changes, and difficulty conceiving; you do not need every symptom to have PCOS, but irregular periods plus one androgen-related sign warrants evaluation.

PCOS symptoms can vary widely from person to person. Some women have mild symptoms, while others experience several that significantly affect their daily life. Here are the most common signs to watch for.

Menstrual irregularities

• Irregular periods: Cycles longer than 35 days or shorter than 21 days
• Missed periods: Going two or more months without a period
• Heavy periods: Unusually heavy bleeding during periods
• Unpredictable cycles: Difficulty knowing when your next period will come

Skin and hair changes

• Excess hair growth (hirsutism): Unwanted hair on the face, chin, chest, back, or abdomen - affects up to 70% of women with PCOS
• Acne: Persistent acne on the face, chest, or upper back, often beyond the teenage years
• Oily skin: Increased oil production leading to frequent breakouts
• Hair thinning: Thinning hair on the scalp, similar to male-pattern baldness
• Skin darkening: Dark patches of skin in body creases (neck, groin, under breasts) - called acanthosis nigricans

Weight and metabolism

• Weight gain: Particularly around the abdomen
• Difficulty losing weight: Even with diet and exercise
• Insulin resistance: Your body struggles to use insulin effectively, which can lead to higher blood sugar levels

Reproductive symptoms

• Difficulty getting pregnant: PCOS is one of the leading causes of infertility
• Multiple ovarian cysts: Small fluid-filled sacs on the ovaries (visible on ultrasound)

Emotional and mental health

• Mood swings: More pronounced emotional changes
• Anxiety and depression: Higher rates compared to women without PCOS
• Fatigue: Persistent tiredness, often linked to insulin resistance
• Sleep problems: Including sleep apnea

Other symptoms

• Headaches (due to hormonal changes)
• Pelvic pain
• Inflammation

Important to know

• You don't need to have all symptoms to have PCOS
• Symptoms can change over time
• Many symptoms overlap with other conditions, so proper diagnosis is essential
• Symptoms can be managed effectively with the right treatment plan

When to seek help

If you notice several of these symptoms - especially irregular periods combined with acne, excess hair growth, or difficulty managing your weight - schedule an appointment with your healthcare provider.

Use Femora to track your cycle patterns, symptoms, and flow intensity. Having detailed data about your menstrual history makes it easier for your doctor to assess whether PCOS could be a factor.