My Partner Was Admitted To Hospital Monday26th September With A

My partner was admitted to hospital Monday26th September with a severe infection of his kidneys and urine. Discharged on Friday 30th September. He had problems giving blood as his veins had collapsed with dehydration. Woods were taken from his arteries. He has been discharged but tonight has a red rash on his inner arm, by his elbow where they tried to take blood. The rash is red and spreading....?