Steatocystoma Multiplex: A Comprehensive Guide
Medically reviewed by Andre Stone | MD, University of Pittsburgh School of Medicine on April 9th, 2026.
Published on April 9th, 2026. Updated on August 24th, 2026.
Key Takeaways
Steatocystoma multiplex is a rare skin condition causing multiple small cysts filled with oily material
The condition is usually inherited and appears during puberty or early adulthood
Cysts typically develop on the chest, back, underarms, and groin areas
While not dangerous, the cysts can become infected or cause cosmetic concerns
Treatment options include surgical removal, laser therapy, and drainage procedures
Overview
Steatocystoma multiplex is a rare genetic skin disorder that causes multiple small cysts to form under the skin. These cysts contain an oily, yellowish fluid and typically measure between 3 to 30 millimeters in diameter. The condition affects both men and women equally and usually becomes noticeable during puberty or early adulthood.
The cysts most commonly appear on the chest, back, shoulders, underarms, and groin area. While steatocystoma multiplex is not life-threatening, it can cause significant cosmetic concerns and emotional distress for those affected. The condition is chronic, meaning the cysts persist throughout life unless surgically removed.
Steatocystoma multiplex is rare, but its exact prevalence is not well established. Some cases run in families, while many occur without a family history. The cysts develop because oil glands and hair follicles don't work properly due to genetic changes. People with this condition often feel self-conscious about the appearance of their skin, which is why learning about treatment options is important. Understanding this condition helps patients make informed decisions about treatment options and management strategies.
Symptoms & Signs
Steatocystoma multiplex presents with characteristic symptoms that typically develop gradually over time. The condition primarily affects areas of the body with high concentrations of oil-producing glands.
Primary Symptoms
Small, dome-shaped cysts under the skin that feel soft and movable
Yellowish or creamy discharge when cysts rupture or are squeezed
Multiple cysts appearing in clusters, especially on the chest and back
Cysts that may become red, swollen, or tender if infected
When to Seek Care
You should contact a healthcare provider if you notice multiple small bumps under your skin that persist or grow larger. Seek prompt medical attention if cysts become increasingly painful, red, or start draining pus, as this may indicate infection. Some people notice their cysts get worse during hot, humid weather when the skin sweats more. Others find that stress and hormonal changes can cause the cysts to become more inflamed. If you're unsure whether your symptoms need medical attention, it's always better to check with your doctor.
When to Seek Immediate Care
Contact your doctor immediately if you develop fever, spreading redness around cysts, or severe pain, as these symptoms may indicate a serious infection requiring prompt treatment.
Causes & Risk Factors
Age
Risk Factors and Associations
Symptoms often begin during puberty or early adulthood. A strong family history may increase risk, and the condition may be associated with other genetic skin or hair-follicle disorders.
Genetics
Strong family history increases risk, as the condition is often inherited in an autosomal dominant pattern
Lifestyle
Cysts often first appear around puberty, suggesting that hormonal changes may play a role.
Other Conditions
May be associated with other genetic skin conditions or hair follicle disorders
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Diagnosis
Medical History & Physical Examination
Your doctor will begin by asking about your family history of similar skin conditions and when you first noticed the cysts. They will examine your skin carefully, looking for the characteristic small, soft bumps that contain oily material. The doctor will usually diagnose the condition from its appearance and may recommend a biopsy if the diagnosis is uncertain.
During the physical exam, your healthcare provider will note the location, size, and number of cysts. They may also check for signs of infection or inflammation around the affected areas. Your doctor will ask about when the cysts first appeared and if they run in your family. They may take photos of the affected areas to track changes over time.
Diagnostic Testing
Biopsy of cyst tissue to examine cells under a microscope and rule out other conditions
Genetic testing may occasionally be considered when a hereditary form is suspected, but it is not routinely needed for diagnosis.
Dermoscopy examination using a special magnifying device to better visualize cyst characteristics
Ultrasound imaging to assess the depth and structure of larger cysts before treatment
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Treatment Options
Treatment for steatocystoma multiplex focuses on removing existing cysts and preventing complications like infection or inflammation. The choice of treatment depends on the number, size, and location of cysts.
Conservative Treatments
Keep irritated cysts clean and avoid picking them. A healthcare professional may recommend an antibiotic if there are signs of bacterial infection.
Warm compresses may ease discomfort in an inflamed cyst, but painful, pus-draining, or spreading lesions should be assessed because additional treatment may be needed.
Oral antibiotics for widespread infection or when multiple cysts become inflamed simultaneously
Advanced Treatments
Surgical excision to completely remove individual cysts, especially larger ones causing discomfort
Laser therapy using CO2 or other lasers to destroy cyst walls and contents with minimal scarring
Electrosurgery to remove multiple small cysts quickly using electrical current
Needle aspiration to drain cyst contents, though this method has high recurrence rates
Complete removal of an individual cyst and its wall can reduce the chance of recurrence at that site, but the best approach depends on the number and location of cysts and the risk of scarring. However, new cysts may form elsewhere on your body since the genetic condition continues throughout life. Your doctor can help you decide which treatment works best based on how many cysts you have and where they're located.
Living with the Condition
Daily Management Strategies
Keep the affected skin areas clean and dry to prevent bacterial growth that could lead to infections. Avoid squeezing or picking at cysts, as this can introduce bacteria and cause scarring. Wear loose-fitting, breathable clothing to reduce friction and irritation in areas where cysts commonly develop. Consider using gentle, fragrance-free moisturizers to keep skin healthy while avoiding products that might clog pores or irritate existing cysts.
Many people find that planning their day to avoid situations that irritate their cysts helps them feel more confident. This might mean avoiding certain clothing styles or activities that create extra sweating. If friction, sweating, or another factor seems to irritate your cysts, keep a simple symptom journal to identify patterns and discuss them with your doctor.
Exercise & Movement
Regular physical activity is generally safe with steatocystoma multiplex, but take precautions to prevent cyst irritation. Choose moisture-wicking fabrics during exercise to reduce friction against the skin. Shower promptly after sweating to prevent bacterial buildup around cysts. If an activity repeatedly irritates cysts, protect the affected area or ask your doctor about practical adjustments.
Swimming and water activities are usually fine, though you should rinse off afterward to keep your skin clean. Walking, yoga, and other gentle exercises are great choices for staying active without aggravating your cysts. Talk to your doctor about which activities are safest for you based on where your cysts are located.
Prevention
Maintain good hygiene by showering regularly with a gentle cleanser.
Avoid picking, squeezing, or scratching cysts to prevent infection and scarring
Wear loose, breathable clothing to reduce friction and moisture buildup
Use gentle skincare products without harsh chemicals that might irritate sensitive skin
Consider genetic counseling if planning to have children, as the condition can be inherited
See a dermatologist if the diagnosis is uncertain, cysts become painful or inflamed, or you would like to discuss treatment options.
Manage stress levels, as emotional stress can sometimes trigger hormonal changes that worsen symptoms
You can't prevent steatocystoma multiplex from developing because it's genetic, but you can prevent complications. Staying away from situations that irritate your skin helps keep your cysts from getting infected. Wearing the right clothing and using good hygiene habits are simple steps that make a big difference. Talk to your doctor about any preventive measures that might work specifically for you.
Frequently Asked Questions
Frequently Asked Questions
Is steatocystoma multiplex contagious?
No, steatocystoma multiplex is not contagious and cannot be spread from person to person through contact. It may be inherited or result from a spontaneous genetic change.
The cysts typically do not disappear without treatment and tend to persist throughout life. Some may occasionally rupture and drain naturally, but they usually reform unless the cyst wall is completely removed through medical procedures.
This condition is benign and does not increase your risk of developing skin cancer. However, it's important to have any unusual changes in existing cysts evaluated by a healthcare professional to rule out other conditions.
The number of cysts varies greatly between individuals, ranging from just a few to hundreds. Most people develop between 10 to 50 cysts, though some severe cases may involve many more throughout the affected areas.
There is currently no cure that prevents new cysts from forming, but existing cysts can be effectively treated through various medical procedures. Treatment focuses on managing symptoms and removing bothersome cysts as they develop.
Still have questions?
Consult with a healthcare professional for personalized advice.