5 Common Trigger Points Causing Your Shoulder Pain

Why Shoulder Pain Is Hard to Diagnose

The shoulder is the most mobile joint in the body, which makes it both versatile and vulnerable. Trigger points in the rotator cuff muscles, deltoid, and surrounding musculature can produce pain patterns that mimic bursitis, impingement, labral tears, and biceps tendinopathy. Many people undergo imaging and even surgery for conditions that are, at their root, trigger point-driven.

Here are the five trigger points most commonly responsible for shoulder pain, and exactly how to address each one.

1. Infraspinatus

The infraspinatus sits on the posterior shoulder blade and externally rotates the shoulder. Its trigger points refer pain to the front of the shoulder and down the outer arm, frequently mimicking biceps tendinopathy or rotator cuff pathology. This is the most commonly active trigger point in shoulder pain cases. Access it by positioning the Pressure Pointer on the posterior shoulder blade, below the bony spine of the scapula.

2. Supraspinatus

The supraspinatus runs above the spine of the scapula and initiates shoulder abduction. Trigger points here refer pain to the lateral deltoid region and down the outer arm. They are often associated with the clicking or catching sensation during shoulder elevation. Apply the Pressure Pointer at the base of the neck where the shoulder blade meets the trapezius.

3. Upper Trapezius

The upper trapezius is not technically a shoulder muscle, but its trigger points are among the most frequent contributors to shoulder pain and are almost always co-active with other shoulder trigger points. Treating the upper trapezius first often reduces the sensitivity of the deeper points and makes the overall session more effective.

4. Subscapularis

The subscapularis lies on the anterior surface of the shoulder blade, facing the ribcage. It is the most powerful internal rotator of the shoulder. Trigger points here refer pain to the posterior shoulder and down the inner arm. Access requires patience: position the Pressure Pointer just inside the lateral border of the shoulder blade from the axillary side.

5. Deltoid

The deltoid wraps the entire shoulder and is divided into anterior, middle, and posterior segments. Trigger points in each segment refer locally but can be intense. Deltoid trigger points are often secondary, meaning they develop in response to referred irritation from the rotator cuff muscles above. Treat the rotator cuff first and the deltoid often resolves without direct treatment.

The Most Effective Sequence

Treat in this order: upper trapezius, infraspinatus, supraspinatus, subscapularis, deltoid. This addresses the referral chain from the most proximal source outward and prevents earlier work from being undermined by untreated upstream trigger points. Five minutes per shoulder per session, daily for one week, produces consistent results for most acute shoulder pain patterns.

References & Further Reading

The shoulder trigger point content in this article has been referenced in patient health communities and fitness discussions:

• Frozen Shoulder Treatment Discussion — Patient.info Community: A patient health community thread discussing trigger point therapy and manual resources in the context of frozen shoulder rehabilitation and the Niel-Asher Technique.
• Back Pain That No One Can Solve — T Nation: A fitness community thread referencing serratus and shoulder trigger point content in the context of shoulder pain that resists conventional diagnosis.