I understand your concern. It is however unclear what you mean by schizophrenic symptoms. If you are talking about delusions or hallucinations Yes, severe
thyroid abnormality can ofcourse cause them. It was called as myxedema madness. However it is easily manageable with appropriate treatment. Some counselling sessions along with medical help also might be useful. I would also be more than happy to help you with that if you are looking for further online assistance regarding the same. You can directly consult with me through Practo as needed. Online chat consultation is available.