Jonathan Todd the European Commission spokesman on Employment, Social Affairs and Inclusion told ITV News that; "some of the stories are quite harrowing. We've had people who've broken their arm who are in pain... but have been told they cannot have treatment."
Everything you need to know about the EHIC, which gives UK residents free or reduced-cost state healthcare when travelling in Europe.
The EU is probing reports Spanish hospitals are refusing to accept the European Health Insurance Card (EHIC). So, what does it mean for you?