Synesthesia
A condition in which the normal separation between the senses appears to have broken down. In synesthesia, sight may mingle with sound, taste with touch, and so on. Females are more often affected than males. People with synesthesia often report that one or more of their family members also had synesthesia, so it may in some cases be an inherited condition. Synesthesia can be induced by certain hallucinogenic drugs and can also occur in some types of seizure disorders.
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- Synesthete
A person with synesthesia, a condition in which the normally separate senses are not separate. Sight may mingle with sound, taste with touch, etc. The senses are cross-wired. For example, when a digit-color synesthete sees or just thinks of a number, the number appears with a color film over it. A given number’s color never […]
- Synovectomy
Surgical removal of the joint lining. A synovectomy may be done to remove the inflamed lining of a joint in rheumatoid arthritis.
- Synovia
The joint fluid. The term synovia was invented in 1520 by the Swiss physician (and alchemist) Paracelsus who combined the Greek syn-(together) and oon (egg) to create a name for any body fluid that looked like the white of an egg. Today, synovia is restricted to the fluid that lubricates joints.
- Synovial chondromatosis
A disorder of a joint featuring a change of the normal joint lining (synovium) tissue’s cellular structure to form cartilage tissue. Synovial chondromatosis is rare. Synovial chondromatosis leads to pain in the affected joint as well as limitation of the range of motion and often locking. The cause of synovial chondromatosis is not known. Synovial […]
- Synovial cyst, popliteal
A swelling in the space behind the knee (the popliteal space). The swelling is composed of a membrane-lined sac filled with synovial fluid that has escaped from the joint. Commonly called Baker’s cyst.