My dd10 has PANDAS and low platelet count, both diagnosed following strep in March of 2008. After the initial low platelet count (30,000) she was diagnosed with ITP which stands for Immune Thrombocytopenic Purpura. ITP is an autoimmune condition in which the body attacks it's own platelets. It sometimes occurs in kids following a virus or bacterial infection, but typically resolves on it's own with no treatment within a couple of months. In our case it has not resolved and my dd10 has had counts fluctuating from 11,000-75,000. The only time she has had a normal count in the last 3 1/2 years was following ivig in 6/2010. But like all other tx for both ITP and PANDAS (so it seems) results were only temporary until the immune system is activated again. We have always been told that once you have 1 autoimmune condition you are at risk for more.