Thank you for posting your query.
The cause of low sodium in this setting can be because of three reasons:
1. Poor salt intake in diet.
2. Effect of medications: certain medications such as diuretics used for treating high BP
can lead to low sodium.
3. SIADH- in this condition, due to a brain disease, anti diuretic hormone (ADH) level is increased, leading to low sodium.
Proper evaluation by a doctor can help in establishing the cause of low sodium. All can be well treated with measures like restriction of fluids, increased oral salt intake, and use of medications such as tolvaptan.
Dr Sudhir Kumar MD DM (Neurology)
Senior consultant Neurologist
Apollo Hospitals, Hyderabad