<prompt> Which of the following isare tuberculides a Lichen scrofulosorumb Lichen nichidusc Lichen aureusd Erythema nodosumbadacab  <response>: Now you must be thinking, why have I given erythema nodosum along with Lichen scrofulosorum, whereas in previous explanation only Lichen scrofulosorum was given as the answer. Read below, there will be no confusion.Tuberculids can be classified into two groups:-1 True definite tuberculids Mycobacterium tuberculosis plays a major etiological role. Examples:- Erythema induration Bazins disease, papulonecrotic tuberculid, Lichen scrofulosorum.2 Facultative tuberculidsMycobacterium tuberculosis is one of the several etiological agents. Examples are:- Erythema nodosum. 