What does chilblain mean?
A chilblain is a painful, itchy swelling that develops on the skin—most often on the fingers, toes, ears, or nose—after exposure to cold, damp conditions. It results when small blood vessels near the skin's surface become inflamed as they respond to sudden rewarming after cold. Chilblains typically appear as red or purplish, tender patches that may burn or itch intensely, and in severe cases can crack or blister. The condition is most common in winter and in cool, humid climates, affecting people with poor circulation or those whose extremities stay cold and wet. Unlike frostbite, which involves freezing of tissue, a chilblain occurs without freezing. The word is usually heard in its plural form, and the equivalent clinical term is perniosis. Prevention centers on keeping the extremities warm and dry, while treatment involves gradual rewarming rather than direct heat. The word carries a distinctly old-fashioned, seasonal flavor in everyday English.
nounA painful, itchy swelling on the skin, typically on the fingers, toes, or ears, caused by exposure to cold and damp conditions and often accompanied by redness or discoloration.
- A painful, itchy inflammation of small blood vessels in the skin, usually on the fingers, toes, nose, or ears, brought on by cold and damp exposure.
"Her fingers were covered in chilblains after a winter spent working in the unheated greenhouse."
"He rubbed his chilblained toes by the fire, wincing at the familiar winter ache."
"Doctors advise keeping hands and feet warm and dry to prevent chilblains during damp northern winters."
The plural is the more common form in practice, since the condition typically produces several swellings at once.
"Warm socks and dry boots are the best defense against chilblains."
The word 'chilblain' hides a 700-year-old medical term inside it — 'blain', an Old Norse word for a blister or swelling that survives almost nowhere else in modern English.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of chilblain
Chilblain is a compound of Middle English 'chil' (meaning cold) and 'blain', an Old Norse-derived term for a blister or sore that entered English in the medieval period and now survives almost exclusively within this word. The compound itself is attested from around the sixteenth century. The element 'blain' ultimately traces back through Old Norse 'blein' to Germanic roots, making it a distant relative of the Greek-derived medical term 'phlyctena' (a blister), both referring to skin swellings.
How chilblain is actually used
Usually used in the plural ('chilblains'), since the condition typically affects multiple digits at once. The singular 'a chilblain' refers to one such swelling. The register is neutral; the medical term 'perniosis' describes the same condition clinically.
Easily confused with chilblain
Frostbite is the freezing and actual tissue damage caused by extreme cold, whereas a chilblain is an inflammatory swelling caused by repeated exposure to cold, damp conditions above freezing.