Skin popping and muscling are 2 forms of injection drug use. Drug absorption is slower so the effect may last longer. The sites can also be used if veins are inaccessible.
Injection Term
Orthodox Term
skin popping
subcutaneous or intradermal injection
muscling
intramuscular injection
Cocaine or methamphetamine can constrict vessels, so the injection site may show pallor, while the periphery shows erythema.
