Hello there.  I can understand your concern.  What tests have you got done to come to a diagnosis of hyponatriemia? What are his symptoms? Your question is not proper. You should provide us with his symptoms and tests results if any are done. We will work it out what could be wrong. Kindly consult a MD consultant physician in person for further evaluation and management. Best regards. Dr. Anil kumar jain. Bangalore.

Hello there...I can understand your concern for your father's health. How did diagnose him first to have low sodium without proper investigations. Don't try to play doctor with someone else health. People with low sodium generally have weakness, nausea, headache or even seizures in severe cases. But these symptoms can occur even in other systemic diseases. Get his serum electrolytes done at any good diagnostic center like kanva diagnostics and consulta general physician for further evaluation.