What could be reasons to always being cold even if its not cold outside or in the house?

Something internally. Primary reynaud's syndrome is processi triggered by exposure to cold air or water, sets off a constriction of tiny vessels in peripheral tissues (finger, toes, ear, nose). Cold all the time? Something going on inside ur body (no trigger): secondary reynaud's is same process but some internal disorder is causing it: cold agglutinin, lupus, sjogren's, scleroderma. Complex. Internist..Rheumatologist..