Ideas? what medications can cause joint pain in hands?

Not very many: Hand pain is highly unlikely to be related to meds. If you can list the meds that concern you then you can receive a more specific answer.

Variety: Almost any medication can cause some form of reaction. I would not hesitate to be seen and go through your medication lost to see if any changes need to be made.

Drug reaction?: Very unlikely, but possible! You need to see a specialist in rheumatology.