Yellow knees can be a symptom of several different medical conditions. Here are some possibilities:
- Hemosiderin staining: This is caused by an excess of iron in the blood. The iron deposits in the skin, causing it to turn yellow, brown, or black. Hemosiderin staining is most common on the lower legs, between the ankles and knees.
- Hyperpigmentation: This is a general term for skin discoloration, which can be caused by various factors, such as sun exposure, inflammation, and hormonal changes.
- Eczema: This is a skin condition that can cause itching, redness, and yellowing of the skin. It is most common in areas where the skin flexes, such as behind the knees and elbows.
- Scleroderma: This is a rare autoimmune disease that causes the skin to become thick and hard. It can also cause yellowing of the skin, especially around the elbows and knees.
- Jaundice: This is a condition that causes the skin and whites of the eyes to turn yellow. It is usually caused by a buildup of bilirubin in the blood. Bilirubin is a yellow pigment that is produced when the body breaks down red blood cells.
If you are concerned about yellow knees, it is important to see a doctor. They can help determine the cause of the discoloration and recommend appropriate treatment.
