13. Secondary infections
This is a type of complication in herpes zoster because it is not the usual course of the disease. It is a secondary skin rash infection, and it usually happens once the vesicular lesions burst. People who develop secondary infections typically have the habit of scratching, bursting the vesicles, removing the crust of lesions, or using tight clothes. Manipulation is the most common cause of secondary infections. It also happens, and sometimes spontaneously, in patients with HIV and other immune deficiencies.