Stroke is a disease of the brain. A stroke occurs when a blood vessel, which is carrying oxygen and nutrients to the brain, bursts or is blocked by a clot. Brain tissue then does not get the oxygen or nutrients it needs. As a result, the affected brain cells is damaged, and this leads to the symptoms a stroke causes. A stroke may affect mental processes such as how people feel, think, communicate, or learn.

Republic of Ireland

Irish Heart Foundation
Provides valuable info about stroke and how it affects both the survivor, the person affected by stroke and their family/friends. It features numerous helpful online resources and also outlines details of stroke support groups across Ireland. 
Website: https://irishheart.ie/

Northern Ireland

NI Chest Heart and Stroke
NI Chest Heart and Stroke supply support groups that provide a listening ear, emotional support and practical advice to people and their families and carers affected by chest, heart and stroke conditions. The groups enable people to meet with others in a similar situation. Their vision is one where everyone can live life to the full, free from chest, heart and stroke illnesses. 
Website: http://www.nichs.org.uk/