dear user thse symptoms of bruise and soreness of hand after iv administration refer to bacterial infection at the insertion site of iv intravenous needle or cannula penetrate the skin and should be sterile and also your skin should be prepared with antiseptic as alcohol before administration ....this is whaat is called aseptic technique....if the care provider doesnot wash hands and wear clean gloves and cleanse your hand and apply alcohol it will be risky to infected any error of the technique cause bacterial invasion and so inflammation and infection occur result in these symptoms you feel of your hand if you get feverish you should do pripheral blood culture to detect micro organism till now the infection is localised and only topical antibiotic cream will be helpful you need not to worry as the cause is error of the aseptic technique of iv cannula insertion wish you healthy life