Tessa, age 68, rarely attends the surgery. She arrives on a Monday morning, however, saying that she had a ‘funny turn’ over the weekend. “I couldn’t think straight and my words came out all wrong. My arm was tingling like no-one’s business so I took to my bed to sleep it off. I still feel a bit queer this morning so Pete said I should pop down and get checked over.” What could be the problem with Tessa and what should you do?