i have never heard anything linking cancer to bipolar disorder or schizophrenia. it is possible that the stress of living with and being treated for cancer might have triggered or exacerbated any latent mental issues she may have had but for cancer and mental health issues to be linked seems very very unlikely. keep in mind that many people suffer from mental illnesses for years before being diagnosed especially if their symptoms are minor and non-disruptive and stressful events can cause any underlying issues to rapidly deteriorate. it is possible that your friend is unfortunately one of many to slip through the cracks. even in recent years diagnosis and treatment of psychological issues can be very difficult as not everyone responds the same even to the most reliable methods. a physician or psychologist possible both can help your friend find more specialized help if traditional methods don't seem to be working. assuming she is on medication they can explore different types to see if they work better and sometimes psychiatry can help more effectively; it depends on the patient the severity of the illness and what kind of bipolar or schizophrenia your friend has. you yourself can help by being there for her in what i'm sure must be a very difficult and frightening time for you both. sometimes with mental disorders having a loved one by your side can serve as a valuable anchor point for seeking or sticking with treatment. on a side note ect has been heavily criticized for years with fewer and fewer official sources recommending it due to its immediate and later side effects. it is entirely possible that it has made your friend's condition worse but i cannot say for sure having only a limited amount of information.
are there any known links between ovarian cancer and bipolar disease? . my friend has been treated and "cured" of the ovarian cancer - removal of ovary and chemotherapy - but now suffers from bipolar and schizophrenia. could there be any relationship between the two? . she has suffered for several years and has even undergone several rounds of ect with no lasting improvement. could there be an underlying hormonal issue that has not yet been addressed? where could she go to seek further help. she is the mother of a 5 year old little girl and needs help. thank you.