Question

The commonest and the most infectious childhood exanthema is caused by

A. Rubella

B. Variola

C. Chicken pox

D. Leprosy

Answer 1

It is a kind of rash or eruption that is a symptom of infection due to a virus. Viral exanthem can occur by many viruses, such as enteroviruses, adenovirus, chickenpox, measles, mononucleosis, and certain types of herpes infection.

Complete Answer:

Infectious diseases mainly occur by organisms like bacteria, fungi or parasites, viruses. Varieties of organisms stay in and on our bodies which are usually harmless or can be beneficial. But under a few conditions, some organisms may harm or cause disease.

Now, let us find the solution from the option.

- Rubella is a viral infection that causes a red colour rash on the body.

- Smallpox is a severe infectious and fatal disease that occurs by infection of the variola virus.

- Exanthema is a skin rash that is accompanied by disease or fever. Chickenpox is a transmissible disease that initiates an itchy rash and red colour boils or blisters all over the body. It is caused by the infection of varicella-zoster virus and spreads easily and is most common in children.

- Leprosy is also called Hansen's disease; it is a chronic infectious disease that occurs by Mycobacterium leprae.

Thus, the correct option is C. i.e. Chicken pox.

Note: An exanthema is a pyrogenic rash on the skin that may be involved with fever or other symptoms. Reasons may be infectious pathogens, medicines reactions and sometimes involvement of both. Exanthemas are mostly associated with infection in children and also viral infections are the most usual. A few exanthemas have very particular morphologies that support in identification and characterization of the eruption.