Which side effect is often associated with heparin administration?

Heparin administration is commonly associated with bruising as a side effect. This occurs due to heparin's mechanism of action as an anticoagulant, which decreases blood clotting. By inhibiting certain clotting factors and affecting the coagulation cascade, heparin can lead to an increased tendency to bleed, which manifests as bruising on the skin. Patients receiving heparin may notice areas of discoloration, indicating minor bleeding beneath the skin surface. This is particularly relevant in patients who are on long-term heparin therapy or when higher doses are used.

In contrast, while headaches, visual disturbances, and nausea can occur for a variety of reasons and might be associated with other medications or medical conditions, they are not typical or primary side effects linked specifically to heparin therapy. Understanding the specific side effects of heparin is essential for monitoring patients receiving this medication and taking appropriate measures to manage any complications that may arise during treatment.