Hello
Welcome to health care magic.
Sorry to know about the condition.
Sudden
fainting with tremors in hands can be due to low blood pressure/low blood glucose/seizure/
heart disease.
I would like to ask if she is on any medication?
Medications for
hypertension and
diabetes may cause such symptoms.
If yes,you need to discuss the matter with your treating physician for change of doses or alternative medicines.
Certain investigations like blood haemogram ,electroencephalogram,electrocardiogram would be necessary to rule out
anaemia,seizure and heart disease respectively.These conditions may cause above symptoms.
You may need to visit neurologist/cardiologist depending upon result of above investigations.
Healthy diet,intake of adequate fluids for general well are recommended.
Hope I answered your query.
wish your mother speedy recovery.