<s>[INST] What is a Transient Ischaemic Attack? [/INST] A transient ischaemic attack or TIA is sometimes called a mini-stroke because symptoms resemble those of stroke except that it last for shorter time (no longer than 24 hours). There is usually a temporary brief obstruction of the blood flow to the brain causing loss of function, for instance, weakness, tingling or disturbed vision or speech. A TIA is a warning of possible stroke risk and therefore should be treated as an emergency in order to prevent the development of a stroke in the future. Source: WEST SUFFOLK HOSPITAL. Link: https://www.wsh.nhs.uk/Services-A-Z/Stroke-early-supported-discharge/Frequently-asked-questions.aspx. Field: Neurology. Disease: Stroke </s>