Most doctors no longer recommend niacin for first line cholesterol control â except for people who can't tolerate statins. In those people, the benefits of niacin may outweigh the risk of potentially serious side effects.
The bulge creates a feeling of tightness behind the knee as well as stiffness and swelling and pain behind the knee and calf. For many, this pain intensifies when flexing or fully extending the leg. Often, these cysts go away without any treatment.
Baker's Cyst: Causes, Diagnosis, and Treatments. A Baker's cyst (Baker cyst), also known as a popliteal cyst, is a swelling in the popliteal space - the space behind the knee - causing stiffness and knee pain. The pain caused by the cyst typically worsens if the patient fully flexes or extends the knee, or moves around.