Hi rasiganbalu,
'Bell Palsy' is like your facial nerve is having infection that make it tight, sometime u cannot close one eye and one side of your mouth looks like 'drop' abit.
The treatment can be aculpuncture (hope i spell it rite.)
The chinese dor in changi hospital is good.
a session about $30. they put needles on the face each session and will helps the condition if you follow up closely.
Hope it helps.