A shoulder that feels frozen with difficulty raising the arm above the head is commonly caused by a condition called frozen shoulder, also known as adhesive capsulitis. In this condition, the shoulder joint becomes stiff and painful, leading to reduced movement over time. It is more common in people with diabetes, thyroid problems, previous shoulder injury, prolonged inactivity, or after keeping the arm immobile for a long period. Other possible causes can include muscle strain, tendon inflammation, arthritis, or rotator cuff problems. Frozen shoulder usually develops gradually, starting with pain and later causing stiffness and difficulty with daily activities such as combing hair, dressing, or reaching overhead. Early treatment is important to prevent worsening stiffness. Gentle shoulder exercises and physiotherapy are often the most helpful treatments because they improve flexibility and gradually restore movement. Simple stretching exercises such as wall climbing exercises, pendulum arm movements, and gentle shoulder rotations may help if done regularly and correctly. Applying a warm compress before exercises can reduce stiffness and improve movement. Pain-relieving medicines may sometimes be advised by a doctor to make exercises more comfortable. Avoid sudden jerky movements or lifting heavy weights, but also avoid completely stopping shoulder movement because this can worsen stiffness. Recovery may take several months, but many people improve significantly with regular physiotherapy and proper care. If the pain becomes severe, sleep is disturbed, or movement continues to worsen, you should consult an orthopedic doctor or physiotherapist for proper examination and treatment guidance.