Thanks for your query.
Well without clinical evaluation it is difficult to diagnose. It could be due to osteoarthritic changes. These are basically age related degenerative changes in the weight bearing joints like knee and hip and is characterized by joint pain and stiffness
. Upon movement the stiffness gradually relives. Sometimes application of hot pads can make the movement possible.
The treatment options include pain killers, hot fomentation, lubricating agents like glucosamine
sulfate, chondroitin , dycerin, etc and some life style modifications and physiotherapy
Right now you can start taking Tablet Tylenol
) Double Strength after breakfast and after dinner.
I also encourage you to consult an orthopedician for physical examination. A few blood tests, X-rays of the knee, CT / MRI scans of the knee will help us diagnose the condition and help us in choosing the best approach of treatment.
I do hope that you have found something helpful and I will be glad to answer any further query.