Multiple cysts showing up across your body usually signals one of a few underlying patterns: a genetic tendency to form skin cysts, a hormonal imbalance driving cyst growth in specific organs, or less commonly, a systemic condition affecting your kidneys, liver, or other internal organs. The answer depends heavily on what type of cysts you have and where they’re appearing.
Most people asking this question are noticing lumps under their skin, getting imaging results that mention cysts in multiple places, or both. Here’s what could be behind it.
Skin Cysts That Keep Appearing
The most common cysts people notice on their own are epidermoid cysts and pilar cysts. Both appear as smooth, round bumps just under the skin surface, sometimes with a yellowish or skin-colored tint. Inside, they contain a thick, white, toothpaste-like material made of keratin, the same protein that forms your hair and outer skin layer. The difference between the two comes down to their lining: epidermoid cysts are lined with cells from the skin’s outer layer, while pilar cysts are lined with cells resembling hair root tissue.
Where they show up offers a clue. Epidermoid cysts favor the face, neck, chest, upper back, and sometimes the groin area. Pilar cysts cluster on the scalp. Some people develop just one or two over a lifetime. Others keep getting new ones, which can feel alarming but often reflects nothing more than a personal tendency to trap keratin beneath the skin.
If you’re developing dozens of small, oily cysts across your chest, arms, or trunk, a rarer condition called steatocystoma multiplex could be the cause. Its exact prevalence is unknown, but it’s considered rare and tends to run in families.
Hormonal Causes: Ovarian Cysts and PCOS
For people with ovaries, polycystic ovary syndrome (PCOS) is one of the most common reasons multiple cysts appear on imaging. The name is slightly misleading. The “cysts” are actually immature follicles, tiny fluid-filled sacs that started developing an egg but stalled partway through.
This happens because of a hormonal chain reaction. The brain’s hormonal signaling fires too rapidly, pushing the pituitary gland to release too much of a hormone that stimulates the ovaries to produce excess androgens (often called “male hormones,” though everyone makes them). At the same time, the hormone needed to mature and release eggs stays relatively low. The result is follicles that begin growing but never finish the job, accumulating in the ovaries over time.
Insulin resistance makes the whole cycle worse. When insulin levels run high, insulin acts almost like a second signal telling the ovaries to produce even more androgens. It also interferes with the brain’s ability to regulate its own hormonal pulses, creating a self-reinforcing loop.
Current diagnostic guidelines define polycystic ovarian morphology as 20 or more follicles visible in at least one ovary on ultrasound. With older imaging technology, the threshold drops to 10 follicles per cross-section or an ovary volume of 10 milliliters or more. Having polycystic-appearing ovaries alone doesn’t confirm PCOS. Diagnosis typically requires at least two of three features: irregular periods, signs of excess androgens (like acne or excess hair growth), and the ovarian findings on imaging.
Genetic Conditions That Cause Widespread Cysts
When cysts appear in unusual numbers or in combination with other growths, a genetic syndrome may be involved. Gardner syndrome is a rare inherited disorder in which people develop hundreds of polyps in the colon alongside growths elsewhere in the body, including cysts under the skin. The colon polyps carry a significant cancer risk, so the skin cysts sometimes serve as an early visible clue that leads to diagnosis.
Steatocystoma multiplex, mentioned earlier, can also have a genetic basis. It tends to appear during adolescence or early adulthood, with clusters of small cysts emerging over months to years. Families with an affected member often see the pattern repeat across generations.
Internal Cysts Across Multiple Organs
If imaging has revealed cysts in your kidneys, liver, pancreas, or other internal organs, polycystic kidney disease (PKD) is one of the more common explanations. PKD causes fluid-filled cysts to grow in the kidneys, and they tend to multiply and enlarge over time. But the kidneys aren’t the only target. Cysts frequently develop in the liver as well, and the likelihood of liver cysts increases with age. The pancreas and other organs can also be affected.
PKD is inherited, meaning it runs in families. Some people discover it through routine imaging done for an unrelated reason, while others develop symptoms like flank pain, high blood pressure, or blood in the urine as cysts grow large enough to crowd out healthy kidney tissue.
Parasitic Infections
In parts of the world where people live in close contact with livestock and dogs, a parasitic infection called echinococcosis can cause cysts in multiple organs. After a person accidentally swallows microscopic parasite eggs (typically from contaminated food, water, or contact with infected animals), the larvae travel through the bloodstream and settle into organs, most often the liver and lungs but potentially anywhere in the body, including the brain. There, they slowly grow into thick-walled cysts that can reach considerable size. If a cyst ruptures, the released contents can seed new cysts throughout the body. This is uncommon in North America and Western Europe but worth considering if you’ve lived in or traveled to endemic regions in South America, Central Asia, the Mediterranean, or parts of Africa.
How Doctors Figure Out What’s Going On
The diagnostic approach depends on whether your cysts are on the skin, inside your body, or both. Skin cysts are usually diagnosed by physical exam alone. A doctor can often tell an epidermoid cyst from a pilar cyst based on location and feel. If there’s any doubt, removing the cyst and examining the tissue under a microscope gives a definitive answer.
For internal cysts, contrast-enhanced CT scanning is the primary tool for identifying and characterizing cysts in most organs. When CT results are inconclusive, MRI serves as the next step because it’s better at detecting subtle features like internal walls, tiny nodules within a cyst, or microscopic fat content that helps narrow down the type. Ultrasound is typically the first-line tool for ovarian and kidney cysts because it’s quick, radiation-free, and readily available.
Your doctor will also look at the full picture: your age, family history, where the cysts are located, how many there are, and whether you have any other symptoms. A 25-year-old with cysts on the scalp and chest faces a very different workup than a 50-year-old with cysts in the kidneys and liver.
Removal and Management Options
Skin cysts that aren’t bothering you generally don’t need treatment. They’re almost always benign. But if a cyst is painful, cosmetically bothersome, or keeps getting infected, removal is straightforward.
Two main techniques exist. Traditional elliptical excision cuts out the entire cyst along with a small margin of surrounding skin, then closes the wound with stitches. A newer approach, punch incision, uses a small circular tool to create a minimal opening, through which the cyst contents and lining are extracted. Punch incision tends to leave a smaller scar (roughly 12 millimeters shorter on average) and may be slightly faster to perform. Both methods have low recurrence rates within the first year, though punch incision may carry a marginally higher chance of the cyst returning since it’s harder to guarantee the entire lining has been removed.
For internal cysts, management varies enormously depending on the cause. Ovarian cysts from PCOS are typically managed through hormonal treatment or lifestyle changes targeting insulin resistance rather than surgical removal. Kidney cysts from PKD are monitored over time, with treatment focused on slowing their growth and protecting kidney function. Parasitic cysts often require a combination of medication and sometimes surgical drainage.
If you’re noticing new lumps appearing regularly, or imaging keeps revealing cysts you didn’t know about, the pattern itself is the most important thing to communicate to your doctor. A single cyst is usually a one-off event. Multiple cysts, especially across different body sites, suggest something systemic is worth investigating.