BANGLES
On the perilous journey to Bangladesh, most refugees survived on one meal a day or less, according to UNICEF. Stories abound of desperate people eating vegetation and drinking from puddles and streams.
"I had to drink water from a pool made by the monsoon rain," said Mohammad Hassim, 25, from his newly built hut on the other side of Balukhali camp.
He said he didn't eat for the final eight days of his arduous trek to Bangladesh, which included nearly three weeks hiding in the hills, and fell sick.
In the camps, food aid is being distributed by the Bangladeshi Army and World Food Programme - families are given rice, lentils and oil every fortnight - but many children are still struggling to eat properly.
Despite the dangers presented by malnutrition, many Rohingya mothers don't realise lack of nutritious food is the underlying health issue causing other illnesses in their children, said Haider, at the camp's clinic.
Often, parents will not realise the child is malnourished until they see a doctor for another reason. Many only know there is a problem when their babies' traditional bangles begin to slip from their skinny wrists.
"There is not much understanding of nutrition," said Haider. "We need to increase awareness around feeding. Education is the key."
Meanwhile, baby Mahmoud's condition is worrying the health workers, and he is referred to see Haider. His mother carries the baby the short distance to the clinic over a bamboo bridge, and is ushered inside.
"The child has a 103 F (39.4C) fever," Haider said. "It's very bad."
He makes a diagnosis of pneumonia and prescribes antibiotics for Mahmoud, with an instruction to return if there is no improvement. His mother simply nods and rocks Mahmoud as he cries on her knee.
She is also given Plumpy Nut - an emergency therapeutic food made from peanut paste - to feed her son.
For him, the future is uncertain. "With God's help he will get better," his mother said.
