BMJ Group Apr 16 2025 Hypersensitivity to the cold, especially ice cold feet, as well as a feeling of heaviness in the legs, are linked to the presence of varicose veins, finds a large study published in the open access journal  Open Heart.  Cold hypersensitivity is often underestimated as a subjective symptom, say the researchers. Varicose veins are usually caused by impaired functioning of the deep or superficial veins, and the perforator veins (short veins that link the superficial and deep