Hi , thanks for the question,
Whenever we answer a question , it is very important for us to know the age and sex of the patient.
Anyways, shoulder pain
radiating to upper arm with restriction of shoulder movement due to pain may be due to shoulder pathology ( unlikely due to cervical spondylitis
in which shoulder movement should not worsen the pain ).It may be periarthritis
of shoulder which wil be better with exercise in due course of time.
Since multiple joint pains
have been suggested, arthritis ( rheumatoid ) cannot be ruled out ( if early morning stiffness
and involvement of small joints of hand).