What are the main differences between intersection syndrome and de Quervain's tenosynovitis?

Both syndromes involve inflammation in the tendons of the wrist. However, the pain begins in different spots. Intersection syndrome causes pain at the intersection point, about three inches up the forearm. De Quervain's tenosynovitis causes pain along the edge of the wrist, closer to the hand. Your doctor will examine your forearm and wrist carefully to locate exactly where your pain is coming from.

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