Side effects of consuming Pregabalin?

Hello All,

I am an insomniac consuming 75mg of Pregabalin every night. Have been doing this for some 4 years now.

Of late i lost my appetite and have itching feeling near joints, mostly lower body. And have also lost ¾ kgs.

Also my new work demands to be up early morning. So i am a bit confused as to what would have caused these physical changes. If anyone has any inputs, it is welcome.