Derfor blev Prialt udpeget som lægemiddel til sjældne sygdomme den 9. juli 2001.
Because the number of patients who have chronic pain requiring intraspinal analgesia (painkilling drugs injected directly into the spine) is low, the disease is considered ‘ rare’, and Prialt was designated an ‘ orphan medicine ’ (a medicine used in rare diseases) on 9 July 2001.