Bruised Brain

Friend me and is obtained to Hawaii it in a surfing accident.. it has a bruised brain now and wipes gibberish on the airplane to the house. the fact how much time takes for his brain to heal?

While your term " bruising" is correct, it generally is referred to as " bruise" or even " contusio cerebri". Bruise minor can disappear from a sweeping of CT in a week. Bruise harsh brain can cause the permanent inability.
If it all depend on how harsh his injury is.