The symptoms include high temperature (fever), aches and headache often start a day or so before a rash appears, spots (rash). Spots appear in crops. They develop into small blisters and are itchy. They can be anywhere on the body. Several crops may develop over several days and loss of appetite or feeding problems.
It is usually diagnosed by the rashes seen or through blood test.
There is no cure for chickenpox, and the virus usually clears up by itself without any treatment.