Medical documentary series. Dr Rangan is called to help a mum battling cluster headaches, considered the worst pain that any human can experience.

Medical documentary series. Dr Rangan meets Emma, a mum suffering from severe anxiety. He also tries to help James, a father battling debilitating exhaustion.

Medical documentary series. Dr Rangan must discover why a sporty obese 11-year-old cannot lose weight. And a 16-year-old with an eating disorder suffers with health issues.