Polycystic Kidney Disease (PKD): Symptoms, Types, and Treatment Options Explained
Updated: 2 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: September 2026
TL;DR: Polycystic kidney disease (PKD) is an inherited condition in which clusters of fluid-filled cysts grow mainly in the kidneys. The cysts are not cancer, but over time they can enlarge the kidneys and reduce their ability to filter waste. The condition most often runs in families, raises blood pressure, and can eventually lead to kidney failure — although severity varies widely from person to person, and early treatment offers the best chance of slowing the disease.
Quick Answer: What Is Polycystic Kidney Disease?
PKD is a condition in which clusters of fluid-filled cysts grow in the body, mainly in the kidneys, causing them to enlarge and slowly lose function.
It is most often an inherited condition passed through families via gene changes — cysts are not cancer.
The most common type (ADPKD) usually shows symptoms between ages 30 and 40; each child of an affected parent has a 50% chance of inheriting it.
A much rarer type (ARPKD) often shows symptoms soon after birth and requires both parents to carry the gene change.
Symptoms include high blood pressure, belly or back pain, blood in the urine, headaches, and kidney stones or infections.
Nearly half of people with PKD develop kidney failure by age 60, though some have mild disease that may never reach that stage.
Treatment focuses on controlling blood pressure, the prescription drug tolvaptan for fast-progressing cases, pain management, and dialysis or transplant if the kidneys fail.
What Is Polycystic Kidney Disease?
A healthy kidney removes waste from the blood and keeps the body's chemical balance in check. In polycystic kidney disease, that job becomes harder over time.
PKD is a condition in which clusters of cysts grow in the body, mainly in the kidneys. Cysts are round sacs filled with fluid — they are not cancer. Over time, the cysts can cause the kidneys to get bigger and gradually stop working as they should.
The cysts in PKD vary in size, and they can grow very large. Having many cysts or large cysts can damage the kidneys. The disease can also cause cysts to grow in the liver, the pancreas, and other places in the body.
Two serious complications stand out: high blood pressure and kidney failure. However, PKD varies greatly in how severe it is, and some complications can be prevented. Lifestyle changes and treatments may help reduce damage to the kidneys.
What Are the Symptoms of Polycystic Kidney Disease?
People often have PKD for years without knowing it. When symptoms do appear, they tend to be nonspecific, which is why family history matters so much for early detection.
Symptom | What It Looks Like |
High blood pressure | Often the earliest sign; can silently damage kidneys, heart, and blood vessels |
Belly, side, or back pain | Often in the side or back; can come and go or be ongoing |
Blood in the urine | Can appear suddenly; usually stops on its own but should always be checked |
Feeling of fullness in the belly | Caused by enlarged kidneys pressing on surrounding organs |
Increased belly size | Visible enlargement of the abdomen from enlarged kidneys |
Headaches | Often tied to high blood pressure |
Kidney stones | Hard deposits that form in the kidneys |
Kidney infections or urinary tract infections | Higher risk due to cyst-related urinary changes |
Kidney failure | The kidneys stop removing waste and extra fluids from the blood |
When Should You See a Doctor?
If you have some of the symptoms listed above, see your healthcare professional. Equally important: if a parent, sibling, or child has polycystic kidney disease, see your healthcare professional to talk about screening — even if you feel completely well. Because PKD is often silent for years, screening is the only way many people learn they have it.
What Causes Polycystic Kidney Disease?
Gene changes cause polycystic kidney disease. Most often, the condition runs in families. Sometimes, a gene change happens on its own in a child — this is called a spontaneous gene change — and in that case neither parent carries the changed gene.
ADPKD: The Dominant Type
Autosomal dominant polycystic kidney disease (ADPKD) is the most common type of ongoing kidney disease that is passed through families. Its symptoms often start between the ages of 30 and 40.
The inheritance math is straightforward: only one parent needs to have the condition to pass it on, and if one parent has ADPKD, each child has a 50% chance of getting the condition.
ARPKD: The Recessive Type
Autosomal recessive polycystic kidney disease (ARPKD) is far less common. Symptoms often appear soon after birth, though sometimes they do not show up until later in childhood or during the teen years.
Both parents must have gene changes to pass on this form. If both parents carry a changed gene, each child has a 25% chance of getting the condition.
Feature | ADPKD (Dominant) | ARPKD (Recessive) |
How common | Most common inherited PKD type | Far less common |
Typical symptom onset | Ages 30–40 | Often soon after birth; sometimes childhood or teens |
Genes needed | One changed gene from one parent | Changed genes from both parents |
Chance for each child | 50% if one parent has it | 25% if both parents carry it |
Carriers | N/A (one changed gene causes the disease) | Carriers' health is rarely affected |
The biggest risk factor for getting PKD is simply inheriting the gene changes that cause the disease from one or both parents.
What Complications Can Polycystic Kidney Disease Cause?
PKD affects more than the kidneys. Understanding the possible complications helps patients and families monitor the right things at the right time.
Complication | Key Details |
High blood pressure | Common; untreated, it causes more kidney damage and raises the risk of heart disease and strokes |
Loss of kidney function | Nearly half of people with PKD have kidney failure by age 60; for some it starts in the early 30s |
Pain | Often side or back; may be linked to bleeding into a cyst, an infection, a kidney stone, or less often cancer |
Cysts in the liver | More likely with age; the liver most often keeps working; women tend to get larger cysts than men |
Brain aneurysm | A balloonlike bulge in a brain blood vessel that can bleed if it bursts; risk is highest with a family history of aneurysms |
Pregnancy complications | Most pregnancies are successful, but there is a risk of preeclampsia, especially with high blood pressure or reduced kidney function beforehand |
Heart valve conditions | As many as 1 in 4 adults with PKD develops mitral valve prolapse, where the valve no longer closes well |
Colon conditions | Diverticulosis — pouches called diverticula in the colon wall that may bleed or become infected |
The aneurysm risk deserves special attention. People with PKD and a family history of ruptured brain aneurysms should ask their healthcare professional about screening. If screening doesn't show an aneurysm, repeat screening in a few years may be suggested, depending on your risk.
How Is Polycystic Kidney Disease Diagnosed?
Specific imaging tests can detect the size and number of kidney cysts and show how much healthy kidney tissue remains.
Test | How It Works | What It Shows |
Ultrasound | A wandlike transducer sends sound waves into the body; a computer turns the echoes into kidney images | First-line way to detect cysts |
CT scan | You lie on a table that slides into a doughnut-shaped device; X-ray beams produce kidney images | Detailed views of cysts and kidney structure |
MRI scan | Magnetic fields and radio waves inside a large cylinder create views of the kidneys | Most often used to gauge how badly PKD affects the kidneys, liver, or pancreas; measures total kidney volume |
MRI is especially useful because measuring total kidney volume helps healthcare professionals understand your condition better and track progression over time.
How Is Polycystic Kidney Disease Treated?
Severity varies from person to person, even among people in the same family. Many people with PKD reach end-stage kidney disease between ages 55 and 65, but some have mild disease and might never reach that stage. Early treatment offers the best chance of slowing the progress of PKD.
Slowing Cyst Growth
The medicine tolvaptan (Jynarque, Samsca) may be used for adults at risk of fast-worsening ADPKD. It is a pill that slows how fast kidney cysts grow and slows the decline in kidney function.
Tolvaptan carries a risk of serious liver injury and can interact with other medicines. A nephrologist — a specialist in kidney health — should monitor for side effects and possible complications.
Controlling High Blood Pressure
Keeping high blood pressure under control can slow the disease and kidney damage. Medicines called ACE inhibitors or ARBs are often used. Lifestyle supports the medicines: a low-sodium, low-fat diet that is moderate in protein and calories, more fluids, not smoking, moving more, and easing stress.
Smoking can greatly harm the kidneys and speed up the start of kidney failure.
Protecting Kidney Function
Experts suggest staying at a healthy weight and body mass index. Drinking water and fluids throughout the day may help slow the growth of kidney cysts, which could slow the loss of kidney function. A low-salt diet with less protein might let kidney cysts respond better to more fluids.
Managing Pain
Over-the-counter acetaminophen (Tylenol, others) can control much of the pain. Importantly, avoid nonsteroidal anti-inflammatory medicines (NSAIDs) such as ibuprofen (Advil, Motrin IB) and naproxen sodium (Aleve) — long-term use can affect how your kidneys work.
For worse pain, a healthcare professional might drain cyst fluid with a needle and inject a sclerosing agent to shrink the cysts. Or, if cysts are large enough to cause pressure and pain, surgery called cyst fenestration can remove them.
Other Treatments by Complication
Complication | Typical Treatment Approach |
Bladder or kidney infections | Antibiotics started quickly to prevent kidney damage; longer courses for complicated infections |
Blood in the urine | Drink lots of fluids right away — water dilutes the urine and may prevent clots; most bleeding stops on its own |
Kidney failure | Dialysis or a kidney transplant; regular check-ups are essential |
Brain aneurysm | Surgical clipping for some; controlling blood pressure and cholesterol plus quitting smoking for small ones |
A notable option for kidney failure is preemptive kidney transplantation — receiving a transplant before the kidneys fully fail, so dialysis is never needed. This is why regular contact with your healthcare team matters so much.
What Lifestyle Changes Help With PKD?
If you have PKD, keeping your kidneys as healthy as possible may prevent some complications. The single most important step is managing your blood pressure.
Self-Care Step | Why It Matters |
Take blood pressure medicines exactly as prescribed | Uncontrolled pressure accelerates kidney damage |
Eat a low-salt diet rich in fruits, vegetables, and whole grains | Supports blood pressure control and cyst management |
Get to and stay at a healthy weight | Reduces strain on the kidneys |
Exercise at least 30 minutes most days | Moderate activity supports blood pressure and overall health |
Limit alcohol use | Protects blood pressure and liver health |
Don't smoke | Smoking greatly harms the kidneys and speeds kidney failure |
Drink water and fluids throughout the day | May slow cyst growth and kidney function loss |
Avoid NSAID pain medicines | Long-term use can affect kidney function |
If you have PKD and are thinking about having children, a genetic counselor can help you understand your risk of passing the disease to your children.
How to Prepare for Your Appointment
You will likely start with your primary healthcare professional and may be referred to a nephrologist. Preparation makes the visit more productive.
Before the appointment: Ask whether anything is needed in advance, such as fasting before certain tests. Make a list of your symptoms (including any that seem unrelated), all medicines, vitamins, and supplements with dosages, and your personal and family medical history — especially any history of kidney conditions. If you can, take a family member or friend along to help you remember the information.
Coping and Support
Living with PKD can feel hard to bear. Support from friends and family helps, and talking with a counselor, psychologist, psychiatrist, or clergy member may also help. Support groups offer useful information about treatments and coping, and being with people who understand your situation can make you feel less alone. Ask your healthcare team about support groups in your area.
Conclusion
Polycystic kidney disease is a lifelong, mostly inherited condition — but it is not a fixed destiny. The cysts are not cancer, severity varies enormously between individuals, and the tools for slowing the disease are real: blood pressure control, tolvaptan for fast-progressing cases, sensible pain management, fluid intake, and close monitoring by a nephrologist.
The single most important takeaway: act early. If PKD runs in your family, ask about screening even if you feel perfectly healthy. If you have symptoms such as unexplained back pain, blood in your urine, or headaches, see your healthcare professional. Early treatment offers the best chance of slowing the progress of polycystic kidney disease and protecting your kidney function for as long as possible.
Talk to a kidney health specialist (nephrologist) about your risk — a short conversation today can add years of healthier kidney function tomorrow.
Frequently Asked Questions
Is polycystic kidney disease hereditary?
Yes. Most often PKD is an inherited condition caused by gene changes passed through families. Sometimes a gene change happens on its own in a child (spontaneous gene change), in which case neither parent carries it.
Is polycystic kidney disease the same as kidney cysts?
No. Ordinary kidney cysts are common and usually harmless. PKD involves clusters of many cysts that grow over time, enlarge the kidneys, and gradually reduce their ability to work.
What are the two types of polycystic kidney disease?
ADPKD (autosomal dominant) is the most common type; symptoms often start between ages 30 and 40, and each child of an affected parent has a 50% chance of inheriting it. ARPKD (autosomal recessive) is far less common, symptoms often appear after birth, and each child has a 25% chance if both parents carry the gene changes.
Can polycystic kidney disease be cured?
There is currently no cure. However, treatment can slow cyst growth, control blood pressure, manage complications, and preserve kidney function. Some people have mild disease that may never progress to kidney failure.
Is polycystic kidney disease fatal?
PKD itself is not immediately life-threatening, but kidney failure is its most serious complication — nearly half of people with PKD reach kidney failure by age 60. With treatment, dialysis, and kidney transplantation available, many people live long lives with the condition.
Can you get polycystic kidney disease without a family history?
Yes, though it is uncommon. A gene change can happen on its own in a child — called a spontaneous gene change — so it is possible to have PKD with no affected parent.
Does polycystic kidney disease cause high blood pressure?
Yes, high blood pressure is a common symptom and complication. Controlling it is the most important step in protecting the kidneys, since untreated high blood pressure causes further kidney damage and raises heart disease and stroke risk.
Can I drink water if I have polycystic kidney disease?
Yes — drinking water and fluids throughout the day may actually help slow the growth of kidney cysts and slow the loss of kidney function. A low-salt diet with less protein may help cysts respond better to fluids.
Can women with polycystic kidney disease get pregnant?
Most people with PKD can have successful pregnancies. The main concern is preeclampsia, a life-threatening pregnancy complication. Risk is highest for those with high blood pressure or reduced kidney function before becoming pregnant, so planning with your healthcare team is important.
What foods should be avoided with polycystic kidney disease?
There is no specific "PKD diet," but experts recommend a low-salt, low-fat diet that is moderate in protein and calories, with plenty of fruits, vegetables, and whole grains. Avoiding NSAID pain medicines and not smoking also protect kidney function.
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References
This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition.
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