Shoulder pain with weakness

Pain can inhibit muscle effort, making the arm feel weak even when the tendon and nerve are intact. Rotator cuff tendinitis and shoulder impingement may make lifting or reaching painful. A rotator cuff tear can cause difficulty raising or holding the arm, especially after a fall or forceful pull. Frozen shoulder and osteoarthritis may reduce strength because movement is stiff and guarded. Cervical radiculopathy may produce weakness with neck pain, tingling, or altered sensation in the arm or hand.

Describe whether weakness means pain stops you, the arm feels heavy, or it genuinely will not hold or lift an object. Record the first moment it appeared, any injury, and whether grip or finger movement has changed.

Avoid heavy lifting, overhead work, and movements that cause the arm to give way. Keep the shoulder gently moving within a comfortable range rather than immobilising it completely for long periods. Use support when dressing or carrying light items. Arrange an examination soon if weakness persists, affects daily activities, or follows an injury; a clinician can compare strength, motion, reflexes, and sensation.

Seek urgent assessment for sudden weakness, inability to raise the arm after injury, a visible deformity, or new numbness. Emergency help is needed if arm weakness occurs with facial drooping, speech trouble, confusion, severe headache, chest pressure, or breathing difficulty. A hot swollen shoulder with fever also requires urgent medical review.

Is the weakness caused by pain, a tendon, or a nerve? Which movements should I avoid temporarily? Would physiotherapy be appropriate, and how should exercises be progressed? Do I need imaging or a follow-up strength check?