How is trigger finger (TF) diagnosed?

Updated: Apr 26, 2021
  • Author: Satishchandra Kale, MD, MBBS, MBA, MCh(Orth), FRCS(Edin), FRCS(Tr&Orth); Chief Editor: Harris Gellman, MD  more...
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Trigger finger (TF) is a clinical diagnosis. Occasionally, the nodule in the tendon is easily felt, and a palpable and audible click can be appreciated when the triggering is relieved with forced extension of the digit.

As a rule, no lab tests are needed in the diagnosis of TF. If there is a concern regarding an associated, undiagnosed condition, such as diabetes mellitus (DM), rheumatoid arthritis (RA), or another connective tissue disease, tests such as those assessing glycosylated hemoglobin (HbA1c), fasting blood sugar, or rheumatoid factor should be ordered.

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