I was a patient of leprosy and after taking the treatment i am cured but it cause some damages can that be cured?

Be more specific: Without saying what kind of damage you received from the treatment, it's impossible to say if it's reversible or not.

Leprosy: Recovery of parts of the body that were impacted by leprosy prior to treatment will depend largely on the extent of damage that had occurred. For instance - if someone lost a digit due to repeated injury - that is not reversible. Take care.