**1. Introduction**

Scrub typhus is also known as 'tsutsugamushi disease'. It is a zoonotic disease. This disease was first mentioned in Japanese folklore to be associated with the jungle mite or 'chigger', which was named 'dangerous bug'. Therefore, the term 'tsutsugamushi' is derived from two Japanese words, 'tsutsuga' which means something small and dangerous, and 'mushi' which means creature.

'Typhus' has been derived from the Greek word 'typos' which means 'fever with stupor'. The name itself reveals a clinical aspect of the disease [1].
