rash

any red eruption of the skin

a series of unexpected and unpleasant occurrences; "a rash of bank robberies"; "a blizzard of lawsuits"

imprudently incurring risk; "do something rash that he will forever repent"- George Meredith

marked by defiant disregard for danger or consequences; "foolhardy enough to try to seize the gun from the hijacker"; "became the fiercest and most reckless of partisans"-Macaulay; "a reckless driver"; "a rash attempt to climb Mount Everest"