<prompt> Normal platelet count is found in:Wiskott Aldrich syndromeHenoch Schonlein purpuraImmune thrombocytopeniaDengue fever  <response>: All other options have decreased platelet count except Henoch Schonlein purpura. Henoch-Schonlein purpura is a systemic syndrome involving the skin purpuric rash, gastrointestinal tract abdominal pain, and joints ahritis. skin manifestations in HSP are due to small vessel vasculitis and platelet count is normal. Wiskott-Aldrich syndrome is an X-linked disease characterized by thrombocytopenia, eczema, and a marked vulnerability to recurrent infection that results in early death. The platelets are small and are reduced in number . 