Chickenpox
Chickenpox is an infectious disease that can occur at any time of life, although more than 90% of cases occur before age 10 years. It appears after the initial contact with the virus, and the risk of infection depends on having no past or disease, or been vaccinated or not. It is a condition that can happen only once in life.
Its main symptoms are fever, malaise, loss of hunger and generalized rash.