3 y/o w/UTI

My 3 year old son has been sick on and off for about 5 months, first he had a bacterial infection, a few ear infections, strep infection and a UTI, should I be concerned about an autoimune disorder or renal disorder?

Thank you

[Dr Santos]

How are you? Can you elaborate more on the bacterial infection? What tests were done? Ear infections, UTI and sore throat are usually common childhood diseases. On the other hand, autoimmune disorders are conditions in which a person's immune system attacks the body's own cells, causing tissue destruction. There are a lot of autoimmune disorders which could be classified as either general (autoimmune reaction takes place simultaneously in a number of tissues) or organ specific (autoimmune reaction targets a single organ). Depending on the particular disease, a number of tests are involved in the diagnosis of autoimmune diseases such as blood tests, cerebrospinal fluid analysis, electromylogram  and magnetic resonance imaging of the brain. Usually, these tests determine the location and extent of damage or involvement. They are useful in charting progress of the disease and as baselines for treatment.
(http://www.healthatoz.com/healthatoz/Atoz/common/standard/transform.jsp?requestURI=/healthatoz/Atoz/ency/autoimmune_disorders.jsp)

Take care and regards.