Thank you for your query on Healthcare Magic.
Hand and foot pain is common in sickle cell anemia
because of red cells blocking blood supply tp those parts because of abnormal shape.
Thos swelling in ankle is due to inflammation with decreased blood supply.
He needs to drink plenty of oral fluids to maintain hydrayion.
has to be checked and if it is low he needs blood transfusion
For pain relief he can use prescribed medication.
Consult yhe docyor further management.