If a finger, or your thumb, starts clicking or catching when you bend it, especially first thing in the morning, there’s a good chance it’s not random. According to the Mayo Clinic, that pattern has a name: trigger finger, also called stenosing tenosynovitis, and it’s more common in women over 50 than in almost any other group.
What’s actually happening
Trigger finger happens when the tendon that bends your finger has trouble gliding smoothly through the sheath that surrounds it, per the Mayo Clinic. That can happen because the sheath itself becomes irritated and swollen, or because a small nodule of tissue forms on the tendon. In most people, what actually starts that irritation in the first place isn’t known.
Who’s more likely to get it
The Mayo Clinic lists several risk factors: repetitive gripping, whether from work or a hobby; diabetes; rheumatoid arthritis; low thyroid function; and being female, specifically being a woman over 50, which the Mayo Clinic says is the group this condition shows up in most often.
What the symptoms actually look like
Per the Mayo Clinic, the hallmark symptoms are stiffness in the finger, especially first thing in the morning; a popping or clicking sensation as the finger moves; tenderness or a small bump in the palm at the base of the affected finger; and, as it progresses, actual catching or locking in a bent position followed by a sudden pop back straight. Triggering tends to be worse in the morning, and it can progress from mild to more severe, sometimes affecting more than one finger or both hands.
What it can affect day to day
The Mayo Clinic notes that trigger finger can make everyday tasks harder: typing, buttoning a shirt, turning a key, gripping a steering wheel, or holding tools.
What treatment actually looks like
The Mayo Clinic lists three main approaches, typically tried in this order: splinting the finger, the more conservative first step; steroid injections; and, if those don’t resolve it, surgery. Which option makes sense depends on how severe and how long-standing the symptoms are, which is a conversation for a doctor rather than a guess at home.
When to see a doctor
Because trigger finger’s first symptoms, morning stiffness and the occasional click, can look like something minor, it’s easy to brush off. If a finger starts actually locking or catching rather than just clicking, that’s a reasonable point to check in with a doctor rather than wait it out.
The bottom line
A clicking finger in the morning isn’t automatically anything serious, but per the Mayo Clinic, it is a recognizable pattern with a name, known risk factors, and treatment that typically starts conservative. Women over 50 are the group most likely to see it, which makes it worth knowing the actual name for what might otherwise get written off as nothing.