Atlas · Forearm

Palmaris Longus

Aching along medial forearm from superficial flexor trigger point taut band activation

Body region

Forearm

Trigger points

documented in this muscle

Common symptoms

patterns cataloged

Common causes

contributory factors

Illustrated overview

Palmaris Longus · Anatomy and referred pain 1. Representative source regions. The illustrated markers and pain pattern are not individual assignments to the numbered trigger points. — **Palmaris Longus · Anatomy and referred pain 1**
Representative source regions. The illustrated markers and pain pattern are not individual assignments to the numbered trigger points.
Open full-size image

Trigger points

Select a trigger point

1. TrP1

Location. Inner forearm, superficial

Palmaris Longus — Palmaris Longus · Trigger-point examples 1 — Trigger point map

Pain referral. Inner forearm, palm, wrist

Pain Pattern

Inner forearm
Palm
Wrist
Base of thumb

What This Pain Feels Like

A burning, prickling sensation spreads across the palm of the hand, often with tenderness felt deep in the center of the forearm. The palm may feel hot and sensitive to touch, and many people mistake this for carpal tunnel syndrome because of the overlapping location. Gripping objects like tools, steering wheels, or even a phone intensifies the discomfort. The pain often builds gradually over hours of hand use and lingers even after stopping the activity.

What Patients Report

Inner forearm ache
Palm discomfort
Wrist pain

What Makes It Worse

Wrist flexion
Gripping
Typing

Browse related exercises (1)

Symptoms patients report

Inner forearm pain Aching along medial forearm from superficial flexor trigger point taut band activation

Palm pain Referred pain to palmar fascia region from palmaris longus distal trigger point referral

Wrist discomfort Volar wrist pain from trigger point tension in palmaris longus tendon approach zone

Prickling or needle-like sensation in palm Palmaris longus trigger points create dysesthetic prickling referral across the central palmar surface

Anterior wrist aching Referral to the anterior wrist crease creates aching along the palmaris longus tendon course

Palm tenderness with gripping Gripping may provoke palm discomfort where the palmar aponeurosis is tensioned. The palmaris longus muscle belly lies in the forearm, not the central palm.

Difficulty with sustained grip Trigger point-mediated palmaris longus fatigue reduces palmar tensioning for sustained grip support

Sense of forearm fatigue Mid-forearm trigger points create localized fatigue sensation in the anterior forearm flexor mass

Common causes

Repetitive wrist flexion Sustained or repeated wrist flexion overloads superficial forearm flexor muscle fibers

Gripping Forceful sustained grip requires palmaris longus co-contraction for wrist stabilization

Typing Prolonged keyboard use with wrist flexion creates cumulative palmaris longus microtrauma

Tool use Sustained hand tool gripping overloads forearm flexor muscles including palmaris longus

Repetitive gripping activities Sustained gripping tensions the palmar aponeurosis through palmaris longus creating forearm overload

Excessive use of hand tools (pliers, wrenches) Forceful tool gripping maximally loads palmaris longus for palmar aponeurosis tensioning and grip support

Golf or racquet sports Club and racquet grip combined with impact forces overload the palmaris longus during each stroke

Prolonged mouse use with wrist flexion Sustained wrist flexion during mouse use maintains chronic palmaris longus activation

Playing guitar or piano with tense wrist Excessive wrist tension during instrument playing chronically loads the palmaris longus muscle

Treatment & self-care

Immediate Relief

Forearm flexor stretch with palm up

Extend your arm in front of you with the palm facing up and elbow straight. Use your other hand to gently pull your fingers back toward the floor until you feel a comfortable stretch along the inner forearm. Hold the stretch without bouncing.

Duration: 20-30 seconds per stretch, 3 repetitions
Frequency: Every 1-2 hours during hand-intensive work
Expect: Goal: A comfortable wrist range for everyday hand use

Immediate Relief

Palm self-massage with thumb

Using the thumb of the opposite hand, apply firm circular pressure across the palm, focusing on tender spots in the center of the palm and the base of the fingers. When you find a particularly tender point, hold steady pressure for 20-30 seconds until the tenderness fades. Work systematically from the heel of the palm to the base of each finger.

Duration: 3-5 minutes per hand
Frequency: 2-3 times per day, especially after gripping activities
Expect: Goal: More comfortable finger movement and light gripping after local care

Exercises

Wrist curl strengthening

Rest your forearm on a table with your hand hanging off the edge, palm facing up. Hold a light weight (1-2 pounds or a water bottle). Slowly curl your wrist upward, hold for 2 seconds, then lower slowly over 4 seconds. Perform 10-15 repetitions. Start very light and increase weight only when the exercise is pain-free.

Duration: 2 sets of 10-15 repetitions
Frequency: Once daily, progressing to every other day as strength builds
Expect: Goal: Gradually greater wrist strength and tolerance for gripping tasks

Caution Stop if sharp pain occurs — start with no weight if needed and progress gradually

Lifestyle Changes

Ergonomic grip modifications

Replace thin, hard tool handles with padded, ergonomic grips that distribute pressure across a wider area of the palm. Use foam tubing or built-up handle wraps on pens, kitchen utensils, and hand tools. When possible, switch to power tools to reduce sustained gripping.

Duration: Ongoing during all gripping tasks
Frequency: Daily — make permanent changes to frequently used tools
Expect: Goal: Reduce demanding grip or pinch exposure while keeping comfortable hand activity

Lifestyle Changes

Frequent grip breaks during manual work

Set a timer for every 20-30 minutes during sustained gripping activities. During each break, fully open and spread your fingers wide for 5 seconds, then relax. Shake your hands gently and perform the forearm flexor stretch. Alternate between gripping tasks and non-gripping tasks when possible.

Duration: 1-2 minute breaks
Frequency: Every 20-30 minutes during manual work
Expect: Goal: Reduce demanding grip or pinch exposure while keeping comfortable hand activity

Professional Treatment

Professional evaluation if palm numbness persists

If palm burning, tingling, or numbness persists despite 3-4 weeks of self-care, or if numbness develops specifically in the thumb, index, and middle fingers, consult a hand specialist or neurologist. They can perform nerve conduction studies to differentiate palmaris longus trigger points from true carpal tunnel syndrome and recommend appropriate treatment.

Duration: Initial consultation typically 30-60 minutes
Frequency: As needed based on symptom persistence
Expect: Goal: Clarify persistent hand symptoms and plan care for the assessed muscle, tendon, joint or nerve findings

Caution Seek evaluation if numbness in thumb, index, and middle fingers develops — this may indicate true carpal tunnel syndrome requiring different treatment

Differential diagnosis

Wrist flexor strain
Carpal tunnel syndrome
Palmar fasciitis
Dupuytren contracture (early)
Wrist ganglion cyst
Flexor tendinopathy

Associated Trigger Points

Wrist flexors
Pronator teres
Flexor carpi radialis TrP1
Flexor digitorum superficialis TrP1
Palmaris longus TrP1
Pronator teres TrP1
Flexor carpi ulnaris TrP1

Key Takeaways

Aching along medial forearm from superficial flexor trigger point taut band activation
Referred pain to palmar fascia region from palmaris longus distal trigger point referral
Volar wrist pain from trigger point tension in palmaris longus tendon approach zone
Palmaris longus trigger points create dysesthetic prickling referral across the central palmar surface
Referral to the anterior wrist crease creates aching along the palmaris longus tendon course