Can ovarian cyst cause my hair to be falling out? My lymphnodes swell up many times over past yr. With no known reason. My dr has no answer for this.

Infection or other. If your doctor has no answer for it, you may ask your doctor refer you to see a dermatologist. Hair loss could cause by thyroid or skin problem or stress or other reasons, etc. Regarding lymphnodes swelling could be from infection or other hematological causes. Do your doctor do blood test check on white blood cell count?