Man’s bedding was making him sick in odd case of 'feather duvet lung'

For three months, a 43-year-old man in Scotland felt sick and fatigued, often experiencing breathlessness with no relief. He sought medical attention and was subsequently diagnosed with a lower respiratory tract infection. Initially, his symptoms remedied — breathing became a bit easier and he felt less tired. But a month later, his health regressed. Further analysis led to a diagnosis of an unusual, but very real, condition.