Sometimes shoulder pain and arm pain can occur suddenly or it can occur slowly. Shoulder pain and arm pain can also occur immediately after an injury or the onset of symptoms can be delayed.
Symptoms may include; deep pain, sharp pain, or a stiff shoulder, pain radiating down into the arm or up into the head. There might be tingling, numbness and pins and needles. There may be pain between the shoulder blades.
Sometimes people can be very unwell if there is a more serious cause like an infection or fracture of the spine.