most humans get colds during the colder weather because people are inside more and viruses are more active and prevalent at that time. this is common for everyone not just you. the cold air temperature does not cause illnesses. there is no such thing as being "allergic to cold weather". one can get a runny nose or even a reactive cough from changes in air temperature or humidity but this is not an allergy or an illness. just a normal bodily response. she could be more sensitive to those things but it is definitely not an allergy to cold weather. this person could have allergies to something in her sleeping environment like dust dust mites feather pillows detergents etc. which could make symptoms appear worse at night but she would need to be allergy-tested to make that determination.
cough and cold only during nightime in winters. is this a known medical condition? . my friend female aged 26 has this weird condition where she gets cough and cold only in the nightime in winters but she stays fine during summers. whenever temperature drops her condition gets worse. she has visited atleast a dozen general physicians. some of them have told her that she is allergic to cold weather. she has tried all sorts of cold and cough medications as prescribed by the doctors but nothing ever helped. so i'm just curious if this "allergy from cold weather" is real or not?