All the vesicles turn brown within three to four days and leave an indelible mark on the skin. These brown spots sometimes take as long as one or two years to fade completely. Some really big ones leave a permanent scar on the surface of the skin with an in-folded margin.

Most of the vesicles give an itching sensation causing a lot of discomfort to the patient. The patient has an urge to scratch the blisters and this may worsen the vesicle condition. The individual also suffers from accompanying fever and redness in all the affected areas. The vesicles are bead-sized and round in shape.

The chicken pox infected person shows typical blister-like lesions all over the body that are filled with watery fluid. They usually begin from the back and gradually spread to all other parts of the body. The vesicles are small, initially resembling heat blisters but gradually enlarge in size to fluid filled lesions. The vesicles get blown up like small bubbles and each vesicle is extremely discomforting. The vesicles then burst and the fluid released gives rise to new vesicles.

This diagnostic test for chicken pox shows the presence of the VZV virus in the patient’s cells with the help of a special microscope. A sample of a skin lesion is taken for the purpose of DFA testing and it shows the results rapidly. However, this test is less sensitive than DNA and tissue culture tests.

This is done to detect the presence of VZV in the form of genetic material in the blood sample of an infected person. It is very useful since it can not only identify the virus, but it can quantify it too. This test is a little expensive and is undertaken to rule out chicken pox from other similar infections.

In this diagnostic test, a sample of the fluid from one of the blisters or vesicles is taken and incubated in a culture of nutrients and live cells with an objective to isolate the virus. This is a specific diagnostic test for chicken pox and takes around 48 hours to give the result.

Detection of the VZV virus causing chicken pox is another diagnostic test for chicken pox. A sample of blood is drawn from the infected person and tested for the presence of the VZV virus. The presence of virus is indicative of the presence of VZV in the blood stream. The VZV is invariably detected in the blood of an infected person, irrespective of the time which has lapsed between the active disease and the blood test. Therefore, this diagnostic test is not always indicative of an active disease.

This test is similar to IgM testing. However, this test is undertaken when the IgM antibodies recede in numbers and the IgG antibodies are more. The IgG antibodies are present in an infected person after ten days to two weeks of the onset of chicken pox. The test is done by taking a sample of intravenous blood and testing for IgG antibodies. The reaction is noted as positive or negative. IgG antibodies begin to appear when the IgM antibodies begin to recede.

This method of testing involves the principle that once you are infected by the Varicella virus, your body produces antibodies in response to the entry of the virus. This is a natural reaction by your immune system that prepares itself for any attack from outside. IgM is an antibody produced within a week of getting infected by the chicken pox virus. A sample of your intravenous blood is taken and tested for the IgM antibody. If found positive, this test gives an indication that you have the Varicella virus present in your body.