Broc Brown is the world's tallest teen

Broc grows an average of 15cm every year. Photo / Facebook

He's 19 years old, stands at 233cm tall, and he's still growing.

Meet Broc Brown, the world's tallest teenager. Growing at a rate of 15cm a year, the Michigan man could easily surpass the current record for the world's tallest man, held by Sultan Kosen, who stands at 248cm.

Broc was diagnosed with a genetic disorder known as cerebral gigantism when he was five years old. At the time, his mother Darci was told he would not live through his teenage years.

Broc has to have shoes made specially to fit his size 28 feet. Photo / Facebook

According to Darci, when her son was in kindergarten, he was "around 157cm tall", she told The Sun.

"When he got into middle school he was around 182cm tall and by high school he was 213cm tall - he could easily grow 15cm in a year.

"It's a genetic disorder and there's nothing that can stop him from growing - I don't know if he will ever stop."

Despite the health issues associated with Brown's condition, which effects one in every 15,000, doctors are now confident he will have a normal life span.

He suffers from learning difficulties, curvature of the spine and narrowing of his spinal cord and his heart is under strain.

Because he was only born with one kidney, he's not able to take painkillers to alleviate his constant back pain.

Broc says he tries to do things to minimise his pain but finds it "hard to deal with".

"I just wish the doctors could do something to help my pain," he told The Sun.

Darci suffers from back pain too after years of picking up her son as a child.

"When you have a five-year-old who has hurt themselves and they come running at you, you pick them up.

"I would carry him around when he was half the size of me so I have a lot of back problems."

Broc was diagnosed with a genetic disorder known as cerebral gigantism. Photo / Facebook

Broc is also plagued by behavioural disorders.

"He has ADHD and intermediate explosive disorder. When he gets mad, he's mad," said his mum.

"It wouldn't take him two seconds to pop a hole in the wall - it could be very dangerous if he wasn't on medication and able to be calmed.

"But overall he is a big softie, his heart is as big as his body."

The financial implications of being one of the world's tallest people have been tough too.

Broc has to have his clothing and shoes made and has had a bed built to accommodate him. He also has a specialist chair which cost $US1285.

The local community has rallied to raise funds for Broc, bringing in around $12,500 which was used to buy socks, clothing and shoes.

"It didn't last long," said Darci. "We had a lot of outfits but within a year he was out of them and it was time to do it all again."

Despite his unique struggles, Broc is determined to get himself a job and live a full life.

"I hopefully want to work for a sporting goods store so something like that, a cashier or something.

"I just want to have my own job."