De Quervain's tendonitis (also called De Quervain's tenosynovitis) is an inflammation or irritation of the tendons on the thumb side of the wrist. This is a painful condition that makes it difficult to perform simple tasks involving the wrist.

There are many causes and activities that involve repetitive hand and wrist motion that can trigger and/or worsen the condition.

Pain is frequently noted over the thumb side of the wrist. This can extend up the forearm. The pain can worsen when twisting the wrist or grasping objects.

Although the diagnosis of De Quervain's can be challenging, it begins with a thorough physical examination. This may include x-rays or other diagnostic tests. After Dr. Cohen confirms that this is, in fact, the diagnosis, depending on the severity of the condition and how long it has persisted, treatment options could include both surgical and non-surgical plans.

Although renowned for his surgical ability, Dr. Cohen is a firm believer in using conservative, non-operative treatment plans before considering surgery. For De Quervain's tendonitis, this could include medication, splinting, hand therapy, ergonomic modifications, and lifestyle changes, as well as injections.