Can you recomend treatment for tendenitis?

Depends where it is: Many tendinitis problems go away on their own over time but unfortunately some do not rest ice alternating with heat can help/ i like to recommend warping the affected extremity with plastic food wrap at bed time to keep in the body heat (this does not work for hips or shoulders) / pt ultrasound massage lasers acupuncture all have their advocates / platlet rich plasma may help some.

RICE= rest, ice, co-: Mpression ; elevation, is a helpful way to remember. Plus pain meds like Ibuprofen or aleve (naproxen). You can use a splint to rest the affected part, a crepe bandage for compression will help + sling for an upper limb problem or elevate on a couple of pillows/cushions. Good luck. If not improving see a gp to get correct dx.