Upper Arm
Outer Upper Arm
Pain on the outer upper arm commonly involves the lateral head of the deltoid or can be referred from the supraspinatus or cervical nerve roots. The C5 dermatome covers the outer upper arm, making it a common site for referred pain from the neck.
Medical Disclaimer
This information is for educational purposes only and does not constitute medical advice. Consult a qualified healthcare provider for proper diagnosis and treatment of any pain or medical condition.
Common Causes
Deltoid strain from lateral raises or overhead work
Supraspinatus tendinopathy referring to the outer arm
C5 radiculopathy from cervical disc issues
Shoulder bursitis radiating to the upper arm
Axillary nerve irritation after shoulder injury
Muscles in This Area
4Shoulder
deltoid
The deltoid is the rounded shoulder cap muscle with anterior, middle, and posterior fibers covering the shoulder joint. It abducts, flexes, and extends the arm for raises and presses. Builds the V-taper and protects the rotator cuff.
Shoulder
supraspinatus
The supraspinatus tops the rotator cuff on scapula's fossa, initiating shoulder abduction. Vital for overhead presses and impingement prevention in weight training.
Upper Arm
triceps brachii
The triceps brachii is the horseshoe-shaped muscle on the back of your upper arm with three heads. It extends the elbow for pushing movements like bench presses and dips. Crucial for arm strength, lockouts in lifts, and overall upper body power.
Upper Arm
biceps brachii
The biceps brachii is the iconic front-of-arm muscle with two heads, located on the front of the upper arm from shoulder to elbow. It flexes the elbow and supinates the forearm, powering curls and underhand pulls. Essential for arm strength and aesthetics in any fitness routine.
Stretches That May Help
Recommended Exercises
12

Ab Roller


Advanced Kettlebell Windmill


Alternate Hammer Curl


Alternate Incline Dumbbell Curl


Alternating Cable Shoulder Press


Alternating Deltoid Raise


Alternating Floor Press


Alternating Hang Clean


Alternating Kettlebell Press


Alternating Kettlebell Row


Alternating Renegade Row


Anti-Gravity Press
When to See a Doctor
Seek medical attention if outer upper arm pain is accompanied by arm weakness, numbness on the outside of the arm, neck pain radiating to the arm, or shoulder instability.
Self-Care Tips
Rest from overhead and lateral arm movements
Apply ice to the outer deltoid area after aggravating activities
Strengthen the rotator cuff to improve shoulder mechanics
Stretch the deltoid with cross-body arm stretches
Related Upper Arm Pain
Upper Arm Muscles
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Activities & Sports
Find which activities involve this area