The short answer: PCOS (polycystic ovary syndrome, now also called PMOS) is the medically recognised condition used by doctors worldwide. PCOD (polycystic ovarian disease) is a term used mostly in India, often for a milder pattern of irregular periods and many follicles on the ovaries, without the wider hormone and metabolic effects. In practice, the two are often used interchangeably, so the most useful question to ask your doctor is which symptoms and test results you actually have.
Why there are two names
PCOS is the name used in international medical guidelines, and in 2026 it was updated to polyendocrine metabolic ovarian syndrome (PMOS) to reflect its effects across the whole body. PCOD isn't recognised as a separate diagnosis in those guidelines. In India, though, it's widely used by doctors, clinics and websites, and many people are told they have "PCOD" when their ovaries look polycystic on a scan.
How the terms are usually used in India
| Item | PCOD (as commonly used) | PCOS / PMOS |
|---|---|---|
| What it describes | Ovaries with many small follicles, often with irregular periods | A hormone and metabolic condition affecting ovulation, skin, hair, weight and long-term health |
| Hormone effects | Mild or none | Raised androgens and often insulin resistance |
| Other symptoms | Few | Acne, extra hair growth, hair thinning, weight gain, dark skin patches, mood changes |
| Long-term health risks | Usually not discussed | Higher risk of diabetes, heart disease and fatty liver |
| Fertility | Usually little effect once periods are regular | Can make getting pregnant harder, though treatment helps |
| Recognised internationally | No | Yes |
Because the line between the two is blurry, someone told they have PCOD may still meet the criteria for PCOS. That matters, because PCOS comes with long-term health checks.
How PCOS is diagnosed
Doctors usually diagnose PCOS when at least two of these three are present:
- Irregular periods or irregular ovulation
- Signs of high androgens, such as excess hair and acne, or raised levels on a blood test
- Many small follicles on the ovaries on an ultrasound
If you've been told you have PCOD, it's reasonable to ask: "Do I meet the criteria for PCOS? Which tests have been done?" Blood sugar and other blood tests help show whether there are metabolic effects that need monitoring. Our guide to PCOS covers symptoms and treatment in detail.
Does PCOS mean you have cysts?
No, and this is one of the biggest misunderstandings about the condition. The "cysts" seen on scans are actually small follicles, the fluid-filled sacs where eggs develop. In PCOS, many follicles start to grow but don't mature and release an egg, so they show up on a scan. They aren't true cysts and don't need removing.
Many people with PCOS have normal-looking ovaries on a scan, and many people with polycystic-looking ovaries don't have PCOS. This is one of the reasons experts renamed the condition PMOS in 2026.
What to do next, whichever label you've been given
The practical steps are largely the same:
- Track your periods, so you and your doctor can see the pattern.
- Eat a balanced diet with plenty of vegetables, dals, whole grains and protein, and less sugar and refined carbs.
- Stay active. Regular exercise improves how your body handles insulin.
- Get the right checks. Ask about blood sugar, cholesterol and blood pressure if you have PCOS.
- Ask about treatment if periods are very irregular, if you're trying to get pregnant, or if acne, hair growth or mood are bothering you.
- Be ready for unpredictable periods. Keep a period panty or pad in your bag, as periods can arrive after a long gap, sometimes heavier than usual.
Frequently asked questions
Is PCOD less serious than PCOS? When people use PCOD to mean a mild pattern without hormone or metabolic effects, yes, it's usually less of a concern. But the terms are used loosely, so it's worth checking with your doctor whether you meet the criteria for PCOS.
Can PCOD turn into PCOS? They aren't separate diseases that change into each other. Symptoms can change over time with weight, lifestyle and age, so regular check-ups help.
Can I get pregnant with PCOD or PCOS? Yes. Many people do, sometimes with help from medicines that support ovulation.
Can diet alone fix PCOD or PCOS? Diet and exercise make a big difference for many people, especially with insulin resistance, but some also need medicine. Your doctor can help you decide.
Related reading
- PCOS Explained: Symptoms, Diagnosis and Treatment
- Irregular Periods: Causes, Tests and What Helps
- PMS: Symptoms, Causes and What Actually Helps
This article is for general information and doesn't replace advice from your doctor.
Sources: NHS: PMOS (formerly PCOS), Bupa: why PCOS is being renamed