Brief Answer:
Treatment is important but it needs to evaluated further.

Detailed Answer:
Hi,
Welcome to health care magic,

I have read the query and understand your concern.

Here, I would like to know that whether you have any history of diabetes or thyroid illnesses or any injury to that joint.

There could be several causes of difficulty of shoulder movement (like adduction or abduction) or shoulder pain such as,

i) rotator cuff injury or
ii) tear or rotator cuff tendinitis (inflammation of its tendons).

The initial treatments for all these are,

1. Avoid repetitive overhead activities

2. Do not carry any heavy object or bag on affected shoulder or arm.

3. Apply ice packs for about 15 minutes twice or thrice daily.

4. Apply diclofenac based topical ointment.(available over the counter)

5. Take oral pain killers (like advil which you are taking) if pain is very severe.

If still pain is persisting then proper examination of shoulder joint is required to find the exact cause and if needed x ray and MRI should be done.

You can consult nearby doctor or orthopedician who can write X-ray and MRI of the shoulder after taking complete history and thoroughly clinical examination.

Hope this information will help you.

If you have any query then feel free to ask me.

Thanks and Regards,

Dr.Sandip Kabra.

---