Pain in the left shoulder when moving the arm

Pain lifting the arm overhead may occur when shoulder tendons or the space around them become irritated; Rotator Cuff Tendinitis and Shoulder Impingement commonly present with pain during lifting. Sudden weakness after a fall or forceful movement raises concern for a tear. Marked stiffness in several directions can occur with Frozen Shoulder, while deep aching and reduced motion may accompany Shoulder Osteoarthritis. Calcific Tendinitis may cause a sudden, intense flare. Neck pain, tingling, or pain travelling down the arm can indicate Cervical Radiculopathy. These patterns overlap, so an examination matters.

Keep the shoulder gently moving within a comfortable range, but avoid repeated overhead work, heavy lifting, and movements that cause sharp pain. Support the arm during rest if that is comfortable, and use a wrapped cold pack after an aggravating activity. Do not keep the shoulder completely still for long periods unless a clinician advises it. A physiotherapist can assess posture, strength, range of motion, and technique, then build a gradual plan.

Arrange a clinical review if pain persists, limits dressing or sleep, or steadily reduces movement. Seek urgent care after a major injury, obvious deformity, sudden loss of strength, or inability to raise the arm. Emergency help is needed for shoulder pain with chest pressure, breathlessness, sweating, faintness, or pain spreading to the jaw or arm.

Which structure seems to cause the pain? Do I need an X-ray or other imaging? Which exercises and daily movements are safe while strength and motion recover?