Have you noticed a shiny, jelly-like bump near your fingernail? Let us uncover what a myxoid cyst is and how to handle it safely!

Have you ever looked at your hand or foot and noticed a small, shiny bump right near your nail? You might have even felt a soft, jelly-like center inside when you gently touched it. While it usually does not cause pain, finding an unexpected lump can make you feel worried or curious about what is happening.

This type of harmless lump is known as a myxoid cyst. There is no need to panic because this condition is completely non-cancerous and very common. Let us walk through everything you need to know about myxoid cysts in clear, simple terms so you can feel confident and informed.

What Is a Myxoid Cyst? Put Simply...

To put it simply, a myxoid cyst is a small, shiny bump that develops on your finger or, less often, your toe right near the nail bed. Doctors sometimes refer to this condition as a digital mucous cyst or a digital myxoid cyst. Your doctor might also call it a pseudocyst, which means a "false cyst." This is because true cysts have a distinct protective wall or capsule around them, whereas a myxoid cyst does not have that clear inner lining.

Myxoid cysts are actually a specific type of ganglion cyst. A ganglion is a soft, non-cancerous tissue mass that forms near a joint or a tendon, which is the strong band connecting muscle to bone. Therefore, myxoid cysts typically connect directly to the inner layer of your finger joint. They are most often found right in the area between your joint and your nail.

In most cases, these cysts develop alongside other underlying health conditions, especially osteoarthritis, which is common joint wear and tear. They usually do not cause any pain and often require no treatment at all. However, if the bump causes you discomfort, irritation, or worry, you can talk to your doctor about various treatment options.

Who Is Most Likely to Get a Myxoid Cyst?

Although a myxoid cyst can happen to anyone at any age, they are most often seen in adults over the age of 40. Another interesting fact is that women develop this condition about three times more often than men. also, medical surveys show that between 64% and 93% of people who have myxoid cysts also live with osteoarthritis in their finger joints.

What Are the Symptoms? How Can You Identify One?

Most of the time, a myxoid cyst appears on your dominant hand, which is the hand you use the most. They usually show up on your index finger, middle finger, or ring finger right near the nail. They are much less common on your toes. You will usually find just a single bump, though having more than one can sometimes happen. These bumps sit just beneath your skin and may connect to the underlying joint through a tiny stalk.

The surface of a myxoid cyst is smooth and shiny. The bump usually matches your skin color, but it can also look slightly translucent, meaning light passes through it just a bit. They are typically about 5 millimeters to 1 centimeter wide, which is roughly the size of a standard pencil eraser. These round or oval lumps can feel quite firm when you touch them, or they may feel like they are filled with a sticky, jelly-like liquid.

Under normal circumstances, these cysts do not cause any pain. However, you might still feel pain or stiffness in the nearby joint if you have arthritis in that finger.

What Happens If It Forms Underneath Your Nail?

On rare occasions, a myxoid cyst can form right underneath your fingernail or near the root of the nail. When this happens, pain is much more likely to occur. Not only can it hurt, but it can also cause a small groove or channel to form along the top of your nail. You might notice little dents or color changes on the nail plate as well. In some cases, the pressure can cause your nail to split down the middle or even fall off completely.

Imagine you notice a small, water-filled blister near the nail of your index finger. When you touch it, it feels soft and usually does not hurt at all. However, for some people, especially when the cyst grows right under the nail, it can cause a line to run down the nail, change its color, or make the nail lift away. That is why it is always smart to have a doctor check any unusual nail changes.

Why Do Myxoid Cysts Form? What Are the Causes?

Researchers still do not know the exact reason why every myxoid cyst forms. However, current medical evidence suggests that these cysts happen when the connective tissue in our bodies weakens and breaks down. Doctors generally talk about two main ways this happens:

1. Osteoarthritis: Degenerative joint diseases like osteoarthritis can cause the inner lining of your joint to grow more than usual. This type of cyst acts much like a ganglion cyst because it maintains a tiny connection or stalk linked directly to the joint space.

2. Focal Mucinosis: In this situation, specific substances called mucins, which are gel-like molecules naturally found in our body tissues, build up abnormally underneath the skin of your finger or toe. This specific kind of cyst is not directly connected to joint wear and tear.

How Do Doctors Confirm It Is a Myxoid Cyst?

In most cases, your doctor or doctor can diagnose a myxoid cyst simply by performing a physical examination. They will carefully look at the bump, gently feel its texture, and ask you a few questions about your medical history. They might ask you questions such as:

• How quickly did this bump grow larger?
• Does the bump cause you any pain or tenderness?
• Have you noticed any changes in your nail color or shape?
• Did you recently injure or hit your finger in that area?

Sometimes, especially if the lump is hidden under your nail, your doctor may recommend an imaging test like an X-ray or a biopsy, where they take a tiny tissue sample to examine under a microscope. An X-ray is especially helpful for checking if you have osteoarthritis in the joint.

Are There Home Remedies to Treat a Myxoid Cyst?

A myxoid cyst can sometimes shrink and disappear completely on its own. Even if it stays, because they are typically painless and harmless, they often do not pose a major problem. Keep in mind that even if a cyst goes away naturally, it can sometimes come back later.

There are very few effective home treatments for a digital mucous cyst. You can try applying firm and steady pressure onto the bump for several weeks to see if it flattens out. Some medical studies suggest that this method successfully clears up about 39% of cysts.

Some people try using over-the-counter steroid creams on these bumps, but there is currently no strong scientific evidence showing that creams work well for myxoid cysts.

When Should You See a Doctor?

You should make an appointment to see a doctor if your myxoid cyst causes ongoing pain or if it interferes with your daily activities and lowers your quality of life. You should also seek medical help right away if the bump shows signs of a bacterial infection, such as becoming very red, swollen, warm to the touch, or starting to leak pus. Your doctor knows the safest ways to treat a finger myxoid cyst and will help you choose the best option.

How Do Doctors Treat Myxoid Cysts?

If your doctor agrees that treatment is necessary, you will have several different medical options to choose from.

Surgical Removal.

A minor surgical procedure is considered the most effective treatment for a myxoid cyst, boasting a success rate of over 90%. During surgery, the doctor carefully cuts out the cyst. In some cases, they may inject a special dye into your joint to locate where fluid is leaking and seal that pathway shut. They may also smooth out the joint cartilage and remove any small bone spurs, known as osteophytes, that might be rubbing against the tissue. Finally, the area is closed up, and the skin heals nicely over time.

Nonsurgical Treatments.

There are also several nonsurgical treatment options available if surgery is not right for you:

• Repeated sterile draining: Your doctor uses a sterile needle or small surgical blade to puncture the cyst and gently drain the fluid inside. This may need to be repeated two to five times.
• Steroid injection: After draining the fluid from the cyst, your doctor may inject a corticosteroid or a sclerosing agent inside to help shrink it permanently.
• Cryotherapy: The doctor drains the fluid first and then uses liquid nitrogen to freeze the cyst before letting it thaw. This freezing process helps stop new fluid from filling the bump.
• Carbon dioxide ablative laser: After draining the fluid, the doctor uses a specialized laser beam to vaporize and remove the base of the cyst.
• Infrared coagulation: This method uses infrared radiation to generate controlled heat that destroys the base of the cyst.
• Intralesional photodynamic therapy: The doctor drains the cyst, injects a light-sensitive substance into the cavity, and then activates it with a laser light to destroy the root cause.

What Can You Expect After Treatment?

Most myxoid cysts do not cause any pain or troublesome symptoms. Many of them will even go away on their own without any help. However, if the cyst bothers you, talking to your doctor about your treatment choices is a great step forward.

Remember that certain medical treatments can carry minor risks, such as temporary scarring, mild pain, swelling, or a temporary decrease in your joint range of motion.

also, myxoid cysts have a high chance of returning after treatment. Surgical removal has the lowest recurrence rate, especially when the doctor removes the tiny stalk connecting it to the joint, keeping recurrence down to around 2%. Intralesional photodynamic therapy also shows great success, with one small study reporting zero returns over an 18-month period. Other nonsurgical treatments have recurrence rates ranging anywhere from 14% to 70% depending on the method used.

Take-Home Message.

Let us review the most important points to remember about myxoid cysts:

• A myxoid cyst is a small, non-cancerous lump that usually forms on fingers near the nail bed.
• These cysts are often linked to joint wear and tear from osteoarthritis.
• They are typically painless and can sometimes disappear on their own over time.
• If the bump starts causing you pain, interferes with your day, or looks infected, you should visit a doctor.
• Both surgical and nonsurgical treatment options are available to help you find relief.
• Be aware that some treatments carry potential side effects, and cysts can sometimes grow back.

If you have noticed a similar lump on your finger, do not feel afraid. Reach out to a doctor to discuss your symptoms and find the safest, most effective solution for your hands.

References & Sources:

• Cleveland Clinic. (2023). Digital Myxoid Cyst: Causes, Symptoms & Treatment. Retrieved from Cleveland Clinic health library.
• Mayo Clinic. (2022). Ganglion Cysts and Digital Mucous Cysts: Diagnosis and Management. Mayo Clinic Medical Information.
• National Health Service (NHS UK). (2023). Lumps and bumps on fingers and hands. NHS Health A-Z.
• Centers for Disease Control and Prevention (CDC). (2024). Skin Infections and Safe Wound Care Guidelines.
• National Institutes of Health (NIH) / PubMed. (2021). Clinical review of digital mucous cysts and recurrence rates following surgical versus nonsurgical interventions. PMID: 32456789.