Night sweats can also be a sign of underlying infection and/or cancer.
If symptoms persist, laboratory and/or imaging tests may be warranted.
Hello and welcome to the forum. Thank you very much for your question. Has your friend been diagnosed with multiple cysts or polycystic ovaries, called PCOS? Or does she have a singular cyst? Here is information on PCOS https://www.mayoclinic.org/diseases-conditions/pcos/symptoms-causes/syc-20353439 This is a chronic condition and working with her gynecologist will be important. A singular ovarian cyst involves either waiting for the cyst to pass if it is a simple cyst or treatment to remove it if it is more complex. Excessive sweating is a symptom of PCOS. Treating the PCOS can help with these types of side effects. A little more information about her diagnosis would be helpful in guiding you further.