What is non-24-hour sleep-wake disorder? It is a condition that impacts the natural body clock, thus affecting sleep, and can be triggered by a lack of or no light perception. Tina Snow got in touch after having suffered with this condition for most of her life and she struggled to get the treatment she needed. We have brought Tina together with a world expert in this condition to give information on how the condition works and how it can be treated effectively. We also hear from Tina's GP, who recently sought a individual prescription for melatonin (a natural hormone that regulates sleep) and we hear Kaukub Asia's experience, who also has issues with her circadian rhythm due to her visual impairment.

Presenter: Peter White