Upcoming episodes, programme details and where to watch over the next seven days. All times are UK time.
Fatima is allergic to light and even indoors must take precautions to avoid succumbing to skin cancer. Amar's face has been destroyed by a bony tumour. S6/Ep6
Mahesh weighs 150kg, twice the weight of an average man, due to a syndrome that encourages constant eating. A development in the womb left Christian with no eyes. S6/Ep7
Ravi receives life-changing surgery to remove the huge tumours that cover his face. Lauren has 24-hour treatment to prolong her life. S8/Ep5
Natalie suffered major, life-changing burns after a bonfire explosion. Now, aged 18, she's not letting her burns hold her back. S8/Ep6