Xanthoma is a condition in which fatty deposits form beneath the skin. They can be more than three inches in size or very small. Xanthomas are not painful or dangerous, but can be cosmetically disfiguring. Xanthomas may appear anywhere on the body, but are most frequently found on the elbows, joints, tendons, knees, hands, feet, and buttocks.
Xanthelasma is a form of xanthoma that appears on the eyelids.
Xanthoma is typically caused by:
A risk factor is something that increases your chance of getting a disease or condition.
The following factors increase your chance of developing xanthoma:
- Having a metabolic disorder listed above
- Having extremely high cholesterol and/or triglyceride levels
The most common symptoms of xanthoma are:
- Bumps under the skin
Skin lesions that are:
- Many different shapes
- Yellow to orange
- Have well-defined borders
Xanthoma is usually diagnosed by examining the skin growths, but a biopsy of the tissue will confirm a fatty deposit.
A blood lipid profile and other tests may be done to determine the underlying condition responsible for the appearance of xanthomas.
Treating xanthoma consists of treating and controlling the underlying health conditions that cause the fatty deposits to develop. Better control of the metabolic disorders that can lead to xanthoma can reduce their occurrence.
Xanthomas may be tender, itchy, and painful. Xanthomas can recur after treatment.
Other treatment options for xanthomas include:
Surgery may be used to remove the fatty deposits. However, even after a xanthoma is surgically removed, it can recur.
Laser surgery with CO2 laser, pulse-dye laser, or Erbium-YAG laser can be performed.
Treatment with trichloroacetic acid may also be used to treat xanthomas.
To help reduce your chances of getting xanthoma, take the following steps:
- Keep blood lipids and cholesterol at a healthy level
- Keep metabolic disorders well-controlled
- Reviewer: Ross Zeltser, MD, FAAD
- Update Date: 09/01/2011 -