Hello
Welcome to health care magic.
Neck stiffness and knee stiffness are signs of
osteoarthritis causing degenerative changes in bones.
Frozen shoulder can be because of pinched nerve.
If I were your treating doctor I recommend,
-MRI
cervical spine and knee for confirming the diagnosis and other details.
Consult orthopaedician for further specific management.
-Anti inflammatory analgesic drugs like
acetaminophen or ibuprofen twice a day for couple of days with antacids.
-Local application of
diclofenac gel and warm compresses for 15-30 min for 3-4 times in a day for stiffness and swelling relief.
-Muscle relaxing and strengthening exercises of neck ,shoulder and knee with consultation of physiotherapist.
-Calcium and vitamin D supplementation.
Hope I answered your query.
Feel free to ask any more doubts.