100,000 people in the UK suffer from cluster headaches - so called because they come in disabling bouts, lasting for 4-6 weeks at a time. Dr Mark Porter visits a new one-stop multidisciplinary rapid-access headache clinic at St Thomas's Hospital in London, where Dr Giorgio Lambru explains why it's so vital that patients with cluster headaches have to be seen, diagnosed and treated quickly.

First broadcast on Inside Health, 27 July 2016.