Chickenpox and shingles, both of which are the same pathogen, but there are some differences: 1. The time of onset is different: chickenpox occurs after the initial infection, and herpes zoster is latent in the body after the chickenpox infection and then develops. This is why there are more teenagers with chickenpox, while herpes zoster patients are older and have a higher incidence in adults or the elderly; 2. Different forms of expression: chickenpox is mainly manifested as a generalized distribution of erythema and blisters, mainly on the trunk, which can have vesicles and is highly contagious. Herpes zoster is mainly confined to one part of the body and usually presents as a unilateral, single-site attack. If the immunity is low, it may also be widespread, but less; 3. Different contagiousness: Chickenpox is more contagious and often leads to school suspension or isolation among teenagers. Herpes zoster, on the other hand, is less contagious and does not require extensive isolation or suspension of work or school if there is an attack.