Persistent pain at the injection site a week after a flu shot may be due to prolonged irritation or, less commonly, a local infection. It is vital to have the site evaluated by a healthcare professional. Meanwhile, keep the area clean, avoid pressing or rubbing it, and move your arm gently to prevent stiffness. A medical assessment ensures appropriate care and guidance to relieve the discomfort safely.

For superficial thrombophlebitis without DVT, treatment usually focuses on relieving pain and inflammation, such as using warm compresses, compression, and anti-inflammatory medications. The routine use of blood thinners like Ecosprin (aspirin) is not always necessary. It should only be started under a doctor's guidance. The decision depends on your overall health, risk factors for clotting, and the extent of vein involvement. You should consult your doctor before taking Ecosprin, as unnecessary use can increase the risk of bleeding without providing a significant benefit in uncomplicated superficial thrombophlebitis.

Persistent pain and swelling in a vein for more than a week after an intravenous injection may indicate a deeper clot, inflammation, or infection that needs medical evaluation. It is essential to see a doctor promptly rather than relying on home remedies. The doctor can examine the site, perform imaging if necessary, and determine whether systemic treatment, such as medications or other interventions, is required.

A firm lump or clot at the site of blood donation can sometimes occur due to localised bruising or a small blood clot in a vein, and often resolves on its own. However, if there is persistent redness, swelling, pain, or warmth, it is important to consult a doctor to ensure there are no complications. Avoid massaging the area, keep the arm gently elevated, and monitor for any changes. Medical evaluation will help confirm the cause, guide safe management, and provide reassurance.

Topical creams for skin swelling and superficial thrombosis are typically used to reduce inflammation, improve circulation, and relieve discomfort. These often include anti-inflammatory or circulation-enhancing ingredients, such as herbal extracts, heparinoid-containing gels, or mild corticosteroid creams for inflammation. However, the choice of cream depends on the severity, location, and underlying cause of the swelling or thrombosis. It is essential to consult a doctor before using any topical treatment, because some cases of thrombosis require systemic medications or other interventions, and inappropriate use of creams may delay proper treatment or worsen the condition.