Silent killer: When high blood pressure symptoms are a deadly 'critical emergency' and need 999
![Silent killer: When high blood pressure symptoms are a deadly 'critical emergency' and need 999](https://i2-prod.mirror.co.uk/incoming/article32775477.ece/ALTERNATES/s615/0_Senior-adult-elderly-women-sit-on-bed-with-chest-pain-suffering-from-heart-attack-in-the-bedroomHea.jpg)
High blood pressure often shows no symptoms and can be hard to detect, but if left untreated, it may cause serious and potentially life-threatening damage to the body