Hello Termy,
I use both superficial and deep needling for my patients. It is generally felt that patients using strong blood thinners should not receive needling due to the possibility of uncontrolled bleeding.
Lower grade blood thinners do not seem to cause problems. My patients are asked if they have had recent problems with bruising or if they have problems ceasing blood flow if they receive cuts. If the patients are okay, I needle if appropriate.
My clinic rarely has stroke patients, therefore the needling question does not occur.
Hope this answers your questions.
MrPhysio+