PCOS: Symptoms, Causes and When to See a Doctor
Key points
- PCOS (polycystic ovary syndrome) is a common hormonal syndrome in women of reproductive age.
- The most common symptoms are irregular periods, hair and skin symptoms, difficulties with weight and fertility problems.
- Underlying it is often insulin resistance, which connects the syndrome to the metabolism of the whole body.
- The symptoms can usually be managed well with lifestyle and, when needed, medication, even though the condition cannot be removed completely.
- Confirming the correct diagnosis and ruling out other causes is important before starting treatment.

PCOS, or polycystic ovary syndrome, is one of the most common hormonal disorders in women of reproductive age. It shows up in daily life in many different ways: as irregular periods, changes in skin and hair, difficulties with weight, or trouble getting pregnant. Many people live with PCOS for years before the symptoms are connected to one another. Most of the symptoms, however, can be managed once the condition is recognised and treatment is planned individually.
What does PCOS mean
PCOS is a syndrome in which the function of the ovaries and the body's hormonal balance are disturbed. Despite the name, it is not really about cysts in the sense of fluid sacs, but about follicles that do not mature fully. This is often accompanied by raised levels of male sex hormones (androgens) and disrupted release of the egg, which shows as an irregular cycle.
PCOS also typically involves insulin resistance, in which the body's cells respond to insulin less effectively than usual. This link explains why weight management can be more challenging in PCOS than usual, and why symptoms often ease when insulin sensitivity is improved through lifestyle. PCOS is therefore not simply a local ovarian problem but a condition connected to the metabolism of the whole body.
The syndrome is highly individual: two people with the same diagnosis can have very different symptoms. For some, menstrual problems and fertility dominate; for others, skin symptoms and hair growth; and for others, weight and fatigue. For this reason, treatment is always tailored to whichever symptoms matter most to each person.
What can cause PCOS
The exact cause of PCOS is not known, but both hereditary and lifestyle-related factors play a role. The syndrome often runs in families, and many close relatives may have similar menstrual problems, type 2 diabetes or difficulties with weight.
Insulin resistance plays a central role. When more insulin than usual is needed, its raised level can increase the ovaries' androgen production and disrupt the maturing of the egg. This chain explains several PCOS symptoms at once and is also why symptoms can be influenced through lifestyle and, when needed, medication that improves insulin sensitivity.
Being overweight can intensify the symptoms, but it is important to note that PCOS also occurs in people of normal weight — this is sometimes called lean PCOS. Weight is therefore not the cause of the syndrome, and its absence does not rule out the diagnosis. Lifestyle, sleep, stress and exercise affect the intensity of the symptoms, but they do not by themselves cause the syndrome.
What are the typical symptoms of PCOS
PCOS symptoms vary, but certain features recur in most people. The most common are:
- irregular or absent periods
- increased hair growth on the face or body (hirsutism)
- skin symptoms such as acne or oily skin
- thinning of the hair on the scalp
- difficulties with weight, especially around the waist
- fatigue and mood swings
- difficulty getting pregnant.
Menstrual problems are often the first sign that leads to investigation. The cycle may be infrequent, irregular or absent altogether. The effect of androgens typically shows in the skin and hair, and these symptoms are mentally burdensome for many people even though they are not medically dangerous.
For some, the syndrome shows up above all through metabolism: as fatigue after meals, cravings for sweets, or weight gain despite an ordinary diet. PCOS does not always cause strong symptoms, however, and for some it is only detected when pregnancy is hoped for and does not begin as expected.
How does PCOS affect daily life and long-term health
PCOS is not only a fertility matter; it also has significance for longer-term health. Because of insulin resistance, PCOS is associated with an increased risk of developing type 2 diabetes, and it can also affect blood pressure and lipid values. For this reason, treatment of the syndrome pays attention to overall health, not only to the menstrual cycle.
In daily life, PCOS can also be a mental burden. Changes in skin and hair, difficulties with weight and the fear of infertility can affect mood and self-esteem. Mood swings and fatigue are common in the syndrome, and it is worth talking about them openly with a doctor, since they are part of the overall picture rather than a separate, shameful matter.
The good news is that many long-term risks are preventable. Regular exercise, a balanced diet and keeping weight under control improve insulin sensitivity and can both ease symptoms and reduce the risk of associated conditions.
When does PCOS require a doctor's assessment
It is worth seeing a doctor if periods are repeatedly irregular or absent, if hair growth or acne clearly increase, or if pregnancy does not begin despite trying. Unexplained weight gain, marked fatigue or a suspicion of a hormonal disorder are also good reasons to book an appointment.
A more rapid assessment is needed less often, but a doctor should be contacted if menstrual bleeding is exceptionally heavy or prolonged, or if the symptoms involve strong lower abdominal pain. These may point to something other than PCOS and require their own assessment.
It is also worth remembering that a PCOS diagnosis is always made by a doctor, not on the basis of symptoms alone. Many PCOS symptoms — such as irregular periods or fatigue — can also stem from other causes, such as a thyroid disorder, so confirming the correct diagnosis is important before starting treatment.
How does a doctor assess PCOS
A PCOS diagnosis is based on a combination of symptoms, blood tests and, when needed, an ultrasound. According to the commonly used criteria, the diagnosis requires that at least two of three features are present: infrequent or absent release of the egg (an irregular cycle), raised androgens (as symptoms or in a blood test), and polycystic ovaries on ultrasound.
At the same time, the doctor rules out other possible causes of the symptoms. Blood tests can assess, for example, thyroid function, prolactin and androgen levels, and if needed also glucose metabolism to investigate insulin resistance. This ensures there is no other treatable condition underlying the symptoms.
At the appointment it is worth describing as precisely as possible the regularity of the menstrual cycle, the duration of the symptoms and whether there is a family history of PCOS, diabetes or thyroid disease. This information gives the doctor an overall picture and helps target the investigations correctly.
Common misconceptions
There are many misconceptions about PCOS. One of the most common is that the syndrome only affects people who are overweight — in reality, people of normal weight can also have it. Another misconception is that PCOS automatically means infertility. Although the syndrome can make it harder to get pregnant, many people with PCOS conceive either on their own or with the support of treatment.
A third common misconception is that PCOS can be "cured" completely. It is a long-term condition, but its symptoms can usually be managed well with lifestyle and, when needed, medication. For some, the symptoms also ease with age and especially as menopause approaches.
PCOS treatment
Treatment of PCOS is always tailored to which symptoms matter most and whether pregnancy is hoped for in the near future. The foundation of treatment is lifestyle: regular exercise, a balanced diet and keeping weight under control improve insulin sensitivity and, for many people, ease both menstrual problems and skin symptoms. Even moderate weight loss can restore a regular cycle in some people.
For menstrual problems and skin and hair symptoms, hormonal contraception is often used, as it evens out the cycle and reduces the effect of androgens. Metformin, which improves insulin sensitivity and can support both weight management and a more regular cycle, may be used for insulin resistance. Some people find inositol helpful as a supplement, although the evidence varies and it does not replace a doctor's assessment.
If pregnancy is hoped for and does not begin on its own, the doctor may direct you to treatment that supports the release of the egg, or to fertility investigations. There are also specific medicines and treatments for skin and hair symptoms. The aim of treatment is not just to remove a single symptom, but to support overall wellbeing and long-term health.
How can Dokport help with PCOS
If you suspect PCOS, or already have a diagnosis and would like support in managing the symptoms, a doctor can assess the situation through Dokport in a chat, without a traditional appointment. The doctor goes through your symptoms and situation, assesses the necessary investigations, and can refer you for blood tests or an ultrasound to confirm the diagnosis.
When needed, the doctor can plan treatment to ease the symptoms and support lifestyle changes. If the situation requires the assessment of a gynaecologist or fertility investigations, the Dokport doctor refers you onward to the right place. The aim is to offer a low-threshold way to start looking into the symptoms when it suits your schedule.
Summary
PCOS is a common and highly individual hormonal syndrome that can show up as menstrual problems, skin and hair symptoms, difficulties with weight and trouble getting pregnant. Underlying it is often insulin resistance, which connects the syndrome to the metabolism of the whole body and to longer-term health.
Although PCOS is a long-term condition, its symptoms can usually be managed well with lifestyle and, when needed, medication. The most important things are to get the correct diagnosis, rule out other causes and plan treatment according to which symptoms matter most to you. For unclear or prolonged symptoms it is always worth turning to a doctor rather than being left to guess the cause alone.
Need a doctor?
Describe your symptoms in a remote appointment — a doctor assesses your situation 24/7.
Frequently asked questions
What usually causes PCOS?
What are the most common symptoms of PCOS?
Can you have PCOS even at a normal weight?
How is PCOS diagnosed?
Does PCOS mean infertility?
Can PCOS be cured?
Does weight loss help PCOS symptoms?
What is the role of insulin resistance in PCOS?
Are there long-term risks associated with PCOS?
Can metformin help with PCOS?
Does inositol help with PCOS symptoms?
Can PCOS cause fatigue and mood swings?
Can PCOS involve thyroid problems?
Can a remote doctor help with PCOS?
Do PCOS symptoms change with age?
Read also
- Endometriosis: Symptoms, Diagnosis and Treatment Options
- Vaginitis: symptoms, causes and treatment, with a focus on yeast infection
- Breast self-examination: getting to know your breasts, calmly
- Menopause Symptoms: Causes, Signs and Treatment Options
- Why Do You Gain Weight During Menopause — and What Can You Do About It?
- Urinary Tract Infection (UTI): Symptoms, Causes and Treatment
