Hi, I am wondering what causes non febrile chills? It is May in Wisconsin , not hot. My 22 yo daughter has been complaining of feeling cold the past few days (she can t get warm). A few factors: she is morbidly obese (5 4.5 @275 lbs). She has also had some med issues (not following thru with some GI meds and one of her psych meds, Fluoxetine) and we are checking on her Adderall prescription dosage. She is on the autism spectrum (Asberger s/PDD w/ some comorbid dx: OCD, ADD, anxiety/depression and oppositional defiance (though that has improved). Laura does tend to get cold easily but this has been extreme and persistent for several days & she can t seem to get/stay warm though she doesn t have a fever.