Herpes zoster (HZ), a common viral disease caused by Varicella Zoster Virus (VZV). VZV belongs to herpesvirinae and has the characteristic feature that after primary disease (chicken pox) the virus goes into latency and on reactivation which may occur months to years after primary infection leads to HZ. Chicken pox usually occurs in 2–10 yrs of age group or occasionally in older age group. The reactivation of dormant VZV in sensory ganglion may occur spontaneously or may be due to immunosuppression. Immunosuppression may be due to ageing, HIV infection, malignancy, immunosuppressive drugs, trauma, stress etc. In immunocompromised cases HZ may present with atypical presentations like, disseminated, multidermatomal, recurrent, crusted, haemorrhagic, ulcerative, ecthymatous etc. Typical manifestation of HZ is grouped vesicular lesions on an erythematous base present unilaterally involving a single or adjacent dermatome associated with pain and may be preceded by prodrome of pain.  This study is done to find out the incidence, most common dermatome which affects the Patients and also to find out the complications.