My grandfather woke up with this swollen red cord like vein on his arm. It is tender and warm but the urgent care is closed until tomorrow. Should we go to the ER?

(above 101°F or 38.3°C), or if he exhibits any signs of a systemic infection such as chills or a rapid heart rate, it is crucial to seek emergency care.
Additionally, if there are signs of the condition worsening, such as the red area spreading rapidly, or if your grandfather has a history of deep vein thrombosis or pulmonary embolism, it is advisable continue reading …