Progeria is an extremely rare genetic disorder in which symptoms that are typical of old age end up appearing at a very young age. Symptoms include weight loss, hair loss, stiff joints, skin degeneration, and appearing wrinkly like those of aged people.
The sufferer’s mental development, however, does to get affected. This condition sadly has no cure, and most of the people suffering from Progeria have a very short lifespan. Most people with progeria live only up to mid-teenage years to their early twenties, at most.