True about chickenpox rash:
Ans. B. Pleomorphic* IP of chickenpox-10-21 days* Infectious period is 2 days before to 5 days after the onset of rash* Chickenpox is caused by VZV and reactivation of latent VZV causes shingles (also called herpes zoster).* Like HSV, VZV infects mucous membranes, skin, and neurons and causes a self-limited primary infection in immunocompetent individuals.* Rash of Chickenpox* The chickenpox rash occurs approximately 2 weeks after respiratory infection.* Lesions appear in multiple waves centrifugally from the torso to the head and extremities.* Each lesion progresses rapidly from a macule to a vesicle, which resembles a dewdrop on a rose petal.* On histologic examination, chicken pox lesions show intraepithelial vesicles with intranuclear inclusions in epithelial cells at the base of the vesicles.* After a few days most chicken pox vesicles rupture, crust over, and heal by regeneration, leaving no scars.* This phenomenon of rash is known as pleomorphic rash, where all stages of the rash (papule, vesicle and crust) may be seen simultaneously at one time in same area
Polymorphic
Pleomorphic
Centripetal
Cytoplasmic inclusions
Autoimmune Skin Disorders