self-embedding
n.— «Health officials in Chicago are warning about a growing trend among teenagers who inflict pain on themselves by inserting foreign objects under their skin. The practice, called “self embedding,” is similar to cutting and is most likely to affect girls between 15 and 18 who suffer from depression.» —“Troubled Teens Inserting Objects under Skin, Doctors Warn” MyFox Dallas (Texas) Dec. 4, 2008. (source: Double-Tongued Dictionary)
Further reading
A physician in Blowing Rock, North Carolina, shares some of the vocabulary of his patients from Appalachia. There, a misery is anything painful, such as a misery in my jaw if they have a painful tooth or a misery in my back if they have lumbar pain...
If you eat ice cream too quickly, the painful result is called an ice-cream headache, a cold headache, or brain freeze. But if you’d feel better using the medical term for it, it’s another mouthful: sphenopalatine ganglioneuralgia. This...