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The Hook Is the Injury You Notice. The Fish Prick Is the One That Bites Back.
Fish hook in your finger? If it’s in the fleshy pad, away from a joint, a clinician can usually get it out in minutes, and you’re fishing again within a few days once the hole has sealed. Cut the line and leave it in if it’s near a joint, tendon or nail, went in deep, or is a treble hook. And check your tetanus is up to date.
Fishing hand injuries fall into three groups:
- HOOKS in fingers,
- overuse from casting and fighting fish, and
- wounds from fish spines, teeth and fillet knives.
The injury that gets underestimated is the fish-spine prick that becomes infected days or weeks later.
It looks like nothing on the boat. Then the finger swells overnight…or a small lump turns up three weeks later that an ordinary antibiotic doesn’t touch, cos nobody told the doctor it came from fish.
Some of these problems run on a clock measured in HOURS. Others give you weeks. Knowing which is which is most of the job.
What to do with a fish hook in your finger
Cut the line, leave the hook in, and get to a clinic or the ER if:
- It’s near a JOINT, over a knuckle crease, or near the nail.
- It went in deep, or you can’t see where the point is.
- The finger feels numb, or won’t fully bend or straighten.
- It’s a treble hook with more than one point in, or still attached to a moving lure or fish.
- You don’t know how to remove it safely. No shame in that.
Clinicians pick from a few quick techniques depending on the hook’s depth and barb: a string-pull, covering the barb with a needle, or pushing the point through and cutting the barb off. Usually under local anesthetic, usually in minutes. Pulling a barbed hook straight back out tears tissue on the way.
An X-ray is worth it if the hook may have snapped, went in deep near bone or a joint, or you’re not sure all of it came out.
After it’s out:
- Tetanus. A booster if your last one was more than 5 years ago. Fish, bait and river water all count as a dirty wound.
- Clean and cover. Soap and running water, then a dressing until the hole has sealed, usually 2 to 3 days for a small puncture.
- Gloves for bait and fish until it’s sealed.
- Watch it for 48 hours. Spreading redness, throbbing, or a finger that starts to sit bent means a doctor today.
(You don’t need a bigger boat. You need pliers.)
Crush the barbs flat before you fish. A barbless hook comes out almost the way it went in.
Fish spine sting in your hand: what to do right now
Venomous spines on catfish, weever, lionfish, scorpionfish and stingrays cause pain way out of proportion to the size of the hole.
- Hot water first. Immerse the hand in water as hot as you can tolerate without scalding, around 45°C (113°F), for 30 to 90 minutes while you arrange medical help. Test the temperature with your OTHER hand. A stung hand can’t judge heat and burns easily.
- Get medical help for any stingray wound, severe or worsening pain, spreading swelling, or feeling faint or unwell.
- Fragments. Spine pieces can stay in the wound. An X-ray or ultrasound finds most of them. A fragment left in keeps an infection going.
Fish infections in the hand: which one is it, and how fast does it move?
Fish, shellfish and water carry germs that behave differently from an ordinary cut. They need the right antibiotic, and the doctor can only pick it if you SAY it came from fish. Ordered by speed:
- Vibrio: hours to a day or two. Usually warm salt or brackish water. Fast-spreading redness and swelling, blisters, fever. Emergency, especially if you have liver disease, diabetes or a weakened immune system.
- Flexor tendon sheath infection: hours to a couple of days. A puncture on the palm side of a finger, then the whole finger swells like a sausage, sits slightly bent and hurts badly when you try to straighten it. Same-day emergency. See flexor tendon sheath infection.
- Erysipeloid (“fish handler’s disease”): a few days. A purplish-red, sharp-edged, sore and itchy patch spreading slowly across a finger or the back of the hand, usually within a week of handling fish. Responds well to the right antibiotic.
- Mycobacterium marinum (“fish tank granuloma”): weeks to months. A bumpy red lump or sore that appears 2 to 4 weeks or more after a small scratch and won’t heal. Sometimes new lumps follow in a line up the forearm. Diagnosis needs a biopsy and a specific culture, and treatment usually runs for months.
- Teeth from pike and other toothy species: clean well, and treat it like any bite. See bites to the hand.
In Closing Window terms: Vibrio and tendon sheath infection have windows that shut in hours, and what’s at stake is the finger’s ability to glide, sometimes more. M. marinum gives you weeks, but every week it’s missed is a week it can track deeper toward tendon sheaths and joints. See sushi chefs for how each one looks on working hands.
Fillet knife cuts and braided line
- A fillet knife cut followed by a finger that won’t bend, or a numb strip down one side: tendon or nerve injury until proven otherwise. See which cuts need more than stitches.
- The quick check: hold the finger straight below the tip and try to bend just the tip. Then the middle joint. Then compare the feel of each side of the fingertip with the same finger on your other hand.
- Braided line under tension slices skin like a wire when it runs across a finger. Deep line cuts over a joint deserve the same check.
Elbow and wrist pain from fishing: casting elbow and reeling wrist
- Outer elbow pain from long casting days: tennis elbow. Fly casters who break the wrist far back on each cast load the forearm tendons most.
- Inner elbow and forearm pain from fighting big fish and heavy cranking: golfer’s elbow.
- Thumb-side wrist pain from repeated reeling and wrist flicks: De Quervain’s.
- Aching at the base of the thumb from thumbing a baitcaster spool and tying knots: thumb base overload, or CMC arthritis.
- Fingers going white and numb in cold water: Raynaud’s.
Tennis elbow is diagnosed by examination, not a scan: tenderness on the bony point at the outside of the elbow, and pain when you grip hard or lift your middle finger against resistance. Scans are rarely needed early.
Exercises that settle casting elbow
- Isometric holds. Forearm on a table, palm down, wrist level. Push the back of the hand up against your other hand at a moderate effort and hold 30 to 45 seconds. 5 holds, once or twice a day.
- Slow lifts. Once the holds are easy: a light dumbbell or a water bottle, lift the wrist up over 3 seconds, lower it over 3 to 4 seconds. 3 sets of 15, once a day or every other day.
- Golfer’s elbow version. Same two exercises with the palm facing UP.
- The pain rule. Up to about 3 out of 10 during the exercise is fine, as long as it has settled by the next morning.
Full program on the tennis elbow exercises page. Most casting elbows settle over 6 to 12 weeks of loading. Some take 6 months or longer…a tendon remodels on its own schedule, not your trip calendar.
What a hand therapist adds: the right exercise dose for your tendon, a look at your casting stroke and grip size, and a counterforce strap for the days you won’t skip.
When can I fish again? Return times by injury
Your doctor or surgeon may give you different dates. Use theirs.
- Hook removed from the fleshy finger: a few days, once the hole has sealed. Gloves for bait until then.
- Hook near a joint, or a wound opened to get it out: about 1 to 2 weeks, on your doctor’s say.
- Spine sting, no fragment, no infection: once the pain has settled, often within days. Keep checking the wound for 2 weeks.
- Erysipeloid: once antibiotics are working and the skin is settling, usually 1 to 2 weeks. Gloves for fish handling.
- M. marinum: treatment runs for months. Keep any open sore covered and out of fish, tanks and water until your doctor clears it.
- Fillet knife cut needing stitches only: stitches out around 10 to 14 days, back to handling fish once the wound is fully closed.
- Tendon sheath infection washed out in the OR: often 4 to 8 weeks, once wounds are closed and the finger moves fully again.
- Flexor tendon repair after a knife cut: protected in a splint for about 6 weeks. No fighting fish or heavy cranking before 12 weeks, and full grip strength often takes 3 to 4 months.
- Tennis or golfer’s elbow: keep fishing in shorter sessions while you load the tendon. Full-day trips usually come back over 6 to 12 weeks.
- De Quervain’s: a thumb splint for 4 to 6 weeks if it’s flared. Lighter tackle and shorter sessions first. Long reeling days usually after 6 to 8 weeks.
The changes that make the most difference
- Barbless hooks, or barbs crushed flat with pliers.
- Unhook with pliers or a disgorger, never with your fingers near a thrashing fish.
- Grip spiny fish with a glove or lip grip, and learn which local species carry venom.
- Cut-resistant glove on the hand holding the fish when filleting.
- Break braid with a tool or wrap it around a cloth, never around bare fingers.
- Fly casting: stop the rod with the forearm instead of letting the wrist fold back.
- Use a fighting belt or rod butt pad for big fish, and pump and wind instead of cranking against the full load.
- Pace trip days. Eight hours of casting on day one, after months off, is a common tennis elbow trigger.
Get it checked today if
- Spreading redness, swelling or blisters within a day of any puncture or cut, especially after warm salt water, or with a fever.
- A finger that swells all over, sits bent and hurts to straighten after a puncture.
- A hook near a joint, tendon, nail or eye, deeply embedded, or a treble hook with several points in.
- A stingray wound, or severe pain after any spine puncture.
- A finger that won’t bend, or a numb strip, after a knife or line cut.
Get it checked if
- A spine or hook fragment may still be in the wound.
- A lump or sore appears weeks after a small wound and won’t heal. Tell the doctor it came from fish.
- Elbow pain is still there after 6 weeks of paced fishing and tendon loading.
- Thumb-side wrist pain stops you reeling.
- Fingers go white and numb in cold water and are slow to recover.
Crush the barb, glove the spiny fish, and tell the doctor it came from fish.
Written by Nigel Chua, hand occupational therapist in practice since 2005. Thousands of hands, wrists and elbows assessed and treated. My credentials are here. This article explains; it doesn’t examine. A hand that’s getting redder after a fish injury deserves a doctor today, not after the trip.
Part of: Hand, wrist and elbow pain by job, sport and hobby
Every article on this site is written using the Closing Window Method: name the window your condition runs on, find where you are in it, and act while it’s still open.