Three brothers have with a mystery condition which means they have never grown taller than toddlers, according to their family. Daljeet, 13, Kamaljit, 11, and Ramneet Singh, seven, are around 20in tall, according to their family, and have been told they will never grow any taller. Their family say they are often mistaken for toddlers, aged two or three. Doctors have been unable to determine the cause of their reduced height, but the family from Punjab, India, claim they have been told it is due to something in their brains. Their mother, who remains unnamed, said: "We do all their work. "Whenever people see them, many people make fun of them and many love them. "We have to face a lot of difficulties in taking them anywhere. "Even for getting treatment, we take all three in our lap because due to the small height, all three cannot walk much, nor can they get themselves treated. "My husband is a labourer, and due to lack of money, we had to face many difficulties to get the children treated." The youngest lad, Ramneet, can't stand due to his condition, local sources said, and the three were denied a place at school due to their height. The parents are hoping to raise awareness and get answers, by speaking out about the children.