An anal fissure. And there is no use for lard ...
On the Internet one can read a lot of varying information on solving any problem, and especially it concerns medicine. Something terrible occurs on various forums and portals! A lot of wishes, advices, that's simply ridiculous! The social networks develop true separate branches of discussions on who did what and who were went and by which ointments smeared and so on. Basically it concerns the most intimate problems and diseases.