Sometimes a cold nose happens simply because you're cold ... The condition occurs when cold affects the function of your red blood cells. Hodgkin's disease and a blood platelet disorder called ...

Watch Erica McAlister, Senior Curator of Diptera at the Museum, hint at why Rudolph's nose might glow so bright. Reindeer suffer with symptoms similar to a cold, such as coughing and spluttering - and ...

(Picture: BBC/Ray Burmiston/Comic Relief/Rachel Joseph/Nicky Johnston/Hearst MagazinesUK/Matthew Shave/ITV Studios & Freemantle/Matt Frost) The time has come – Red Nose Day is just around the ...