Medical Glossary
Terms starting with X
- Knock kneesX-Bein
- In knock knees, the legs are positioned so that the knees touch when the legs are held together, while the ankles remain apart. A mild form is normal in childhood, but a pronounced form can put strain on the joints.
- Xanthelasma
- A xanthelasma is a yellowish, flat deposit of fat in the skin, usually on the eyelids. It is harmless, but may be a sign of elevated blood lipid levels.
- XanthomaXanthom
- A xanthoma is a benign, yellowish deposit of fat in the skin or in tendons. Xanthomas often occur when blood lipid levels are elevated.
- XerostomiaXerostomie
- Xerostomia refers to persistent dry mouth caused by reduced saliva flow. It can make speaking, chewing and swallowing more difficult and increase the risk of tooth decay.