But don’t be lulled into a false sense of security by their lightweight, soft and fluffy demeanour – they can be hazardous.
Authors Inase Naohiko, Oba Takehiko, Umino Takeshi, Sekiguchi Shigeo and Yoshizawa Yasuyuki draw attention to the dangers in their 2005 paper for Allergy in Practice (Vol 332; pp. 462-465)
‘Bird fancier’s lung induced by a feather duvet-feather duvet lung‘
“A 71-year-old woman complained of exertional dyspnea. She used the down quilt in last 3 winter seasons. She was diagnosed as hypersensitive pneumonia, and it was improved by corticosteroid administration. However, it recurred by the use of the down quilt. Lymphocyte proliferation assay using the BALF cells was positive. In the environmental provocation test, only down quilt was positive. From them, she was diagnosed bird fancier’s lung induced by down quilt. By the administration of methylprednisolone and prednisolone, pulmonary function and laboratory findings were improved obviously.”
Further reading :
[Duvet photo courtesy of uploader Wikicanadashawn at Wikipedia]