Skin diseases and allergic reactions 

It is due to resurgence or reactivation of the Varicella zoster virus infection which also causes chickenpox

It is a highly infectious disease caused by Varicella zoster virus (VZV)

It is an acute viral infection caused by Herpes simplex virus hominis (types HSV1, HSV2 acquired by close contact with an infected individual

Scabies is an intensely pruritic and highly contagious infestation of the skin caused by mite Sarcoptes scabies.

Is a chronic infection of skin and subcutaneous tissue. It can be caused infection by fungi or bacteria. Once tests have established the etiology, the term Actinomycetoma is used for bacterial form, while Eumycetoma is used for the fungal form. Clinical presentation depends on the affected site and the disease can last for months to years