### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
My teenage daughter (14) has always talked to herself. She now says there is a voice in her head that she has created (the voice of an actual friend) who talks back to her.  She says she is scared that she is schizophrenic. I told her we would make an appointment with our family doctor.  Do I need to do something about this more quickly.  She has done some self harming when she was young when she would get in trouble and would be put in time out, or more recently when something happens that she doesnt know how to deal with, like when she is PMSing.

### output:

Hello, Welcome to Chat Doctor. Thanks for posting your question at this forum. We understand your concern. I am Chat Doctor Psychiatry from India. I will guide you about your daughters' health. Whatever information you have given here about your daughter, point towards a serious long-lasting mental illness of psychosis like Schizophrenia. I must explain you in simpler way. Schizophrenia is a psychotic illness in which the person has abnormal perception, absurd thinking, decline of higher mental function, deterioration in social and occupational functioning and significant personal sufferings for years. The patient may claim to hear unusual voices which others deny hearing. This is called auditory hallucination. Initially the voices come for a short period and the person feels strange and does not understand what to do. He/ she gradually may start believing on those voices as frequency and intensity of voices increases with passage of time. Often these voices comment/discuss derogatory about the person and sometimes these may suggest or command the person to do certain act. Sometimes the person may harm herself/ himself sunder the influence of these voices. As you have experienced, she has a self-talking behavior since last many years, has harmed herself once and now she is claiming a clear two-way conversation with that voice. It appears that she is having auditory hallucination(auditory hallucination is one of the commonest symptoms in psychosis like schizophrenia), and apparently these voices are unpleasant or commanding in nature that might have provoked the episode of self harm in the past. Since the onset of symptoms is in childhood and has been continuing for years it shows poor awareness of caregiver about the symptoms of illness. It is never too late. You must consult a good child and adolescent psychiatrist and encourage your daughter to discuss her symptoms honestly so that the diagnosis can be finalized. If I had been her doctor, I would have advice her for brain imaging, certain other investigations, to take some antipsychotic medicines under supervision of a family member and to attend psycho-educative classes regularly. Medicines and supportive therapy can bring remission to illness. Hope this has helped you. I wish you all the best.