On 14 May 2009, Ingesson announced that he had been diagnosed with multiple myeloma. The treatment was at the start said to be going "in the right direction". Ingesson fully recovered and, on December 2010, made a football comeback by accepting an offer to guide the IF Elfsborg under-21 youth team. On 8 January 2013, Ingesson revealed that the myeloma had returned, and that he would have a stem cell transplant, as the two previous autologous (i.e. of his own stem cells) transplants had been unsuccessful.