My 17yr old friend has severe mood swings.1 time she's happy, 1time she's depressed.she refuses therapy.she tried 2 kill others and herself.wats wrong?

Difficult situation: It sounds like your friend may possibly have a serious psychiatric disorder such as bipolar disorder. This can cause the type of problems you describe. So can abuse of drugs and alcohol. If your friend is 17, her parents need to get her to a psychiatrist for evaluation and help asap. Medications may help a lot -- and therapy too. Her illness may be interfering with accepting treatment.

Potential life threa: Attempt to "kill" others is serious. Patient confidentiality may not apply in presence of danger to others.She apparently poses a threat to her life and the life of others. Patient may need crises intervention if she refuses therapy and medication. This fact pattern appears to justify involving a state agency.

See a doctor.: She should see a mental health professional who can take a thorough history and do a full evaluation before making a diagnosis such as bipolar disorder. She should also see her primary care physician to rule out other medical causes of her mood swings. Pcos has been associated with depression and may cause mood swings. Fluctuations in blood sugar can also cause mood swings.