When a stroke occurs, the one thing that is most affected is the nervous system. A person who suffers a stroke will almost never have normal nerve function in specific parts of the body depending on whether the stroke occurs in the left or right hemisphere.
What massages can do for stroke patients is improve and sometimes even restore the normal nerve function that they lost.
The way this works is that the tactical stimulation of the non-functional nerves is impossible to ignore and if the nervous system recognizes the stimulation, they are functional again.
Repeated use of this treatment can restore the nerves long-term, but after simply one massage the patient can feel immediate results.
Along with stimulation of the nerves, massage in general can help a stroke patient by elevating their mood, lowering blood pressure, relaxing the body and mind and lastly, increasing blood flow to affected areas.