Meet the 'Benjamin Button' children [video]

An 18-month-old boy and his seven-year-old sister suffer from a rare condition that leaves them looking like pensioners - just like Brad Pitt’s Benjamin Button film.

Keshav Kumar and his sister Anjali Kumari already suffer pain in their joints, swollen faces and wrinkled skin. But their parents, Shatrughan Rajak, 40 and wife Rinki Devi, 35, from Ranchi, in Jharkhand, eastern India, and oldest daughter Shilpi, 11, are completely normal.

While the siblings are teased for their looks and are often stared at they dream of a cure. But doctors in India believe they suffer from a disease called Cutis Laxa, as well as a form of Progeria, and claim there is no treatment.