Unintentional weight loss, change in voice, and persistently low blood pressure together need proper medical evaluation, especially in a diabetic patient.
These symptoms can be related to metabolic, hormonal, nutritional, or systemic causes, and should not be assessed in isolation.
Recent surgery and medications can also contribute and need review.
Next Steps
If there is progressive weight loss, worsening voice change, shortness of breath, dizziness, or weakness, this should not be delayed.
Initial evaluation usually starts with basic blood tests and targeted examination based on findings.
Health Tips
Exact cause cannot be identified without clinical examination and reports.
I would strongly advise an in-person consultation rather than relying only on online opinions for this presentation. Online opinions will be able to guide, a physical consultation will be able to diagnose.