Autism spectrum disorders (ASD), especially high functioning autism and Asperger syndrome are rarely diagnosed among girls. ASD females fail to be diagnosed because this population is underestimated within the spectrum. Also the current diagnostic criteria are still imperfect and being improved. Researchers emphasize the need for more scientific investigation in this area. It will improve the ... [Show full abstract] diagnostic process and detection of the autism spectrum disorders among females. As a result this population will not be left without appropriate therapy and support. The article presents some dilemmas in current diagnostic criteria and differences in clinical presentation of ASD girls and boys. Additionally the paper includes a screening test for girls with Asperger syndrome and also two cases of female patients with autism spectrum disorders.