Why is the control of pruritis so important in curing skin diseases?!

Why is the control of pruritis so important in curing skin diseases?

Pruritis is medical speak for intense itching. There are at least a couple reasons why it so important to control/treat: 1) People can scratch themselves to distraction and actually have open wounds all over their body which are then open to more infection, and by extension, worse infections and diseases than the one they presented with. 2) Open skin sites can give further skin area for the presenting infection to spread and increase, so you can make the condition worse and bigger if you spread it by itching. 3) Human beings being what they are, if you itch an infectious skin condition and don't wash your hands well or at all (sigh), you can spread the condition to others. 4) You can also scratch and itch yourself so much that you can damage the tissues and create scar tissue that takes months and months to heal or may require skin grafting. Does that answer your question pretty comprehensively? Any other questions?