Adjustment Disorder and the COVID-19 pandemic
A study was conducted in Poland, during the first phase of the pandemic. The study used self-report surveys to measure the prevalence and severity of symptoms of adjustment disorder compared to PTSD, depression, and anxiety. The data was collected in the first quarantine period between March 25 to April 27, 2020.Results from the study 
The current COVID-19 pandemic was a highly stressful event for 75% of the participants and the most powerful predictor of adjustment disorder. 49% reported an increase in adjustment disorder symptoms, which were more common among females and those without a full-time job. 14% of the sample met the criteria for a diagnosis of adjustment disorder. A significant proportion of the sample was also positive for generalized anxiety (44%) and depression (26%): the presumptive diagnosis rate of PTSD was 2.4%

References
Further reading
First, Michael B., ed. (2014). "Differential Diagnosis by the Trees". DSM-5 Handbook of Differential Diagnosis (1st ed.). Arlington, VA: American Psychiatric Publishing. doi:10.1176/appi.books.9781585629992.mf02. ISBN 978-1-58562-999-2. OCLC 864759427. Casey, P. R., & Strain, J. J. (Eds.). (2015). Trauma-and Stressor-related Disorders: A Handbook for Clinicians. American Psychiatric Pub. ISBN 978-1585625055


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Treatment lengths vary depending on location and stage of the disease at diagnosis. Radical chemotherapy may be as short as six treatments at three-week cycles, but most people undergo chemotherapy for 6–12 months and radiation therapy for 5–8 weeks. Radiotherapy has been used for localized disease. The tumor has a unique property of being highly sensitive to radiation, sometimes acknowledged by the phrase "melting like snow", but the main drawback is that it recurs dramatically after some time.Antisense oligodeoxynucleotides have been proposed as possible treatment by down-regulating the expression of the oncogenic fusion protein associated with the development of Ewing sarcoma resulting from the EWS-ETS gene translocation. In addition, the synthetic retinoid derivative fenretinide (4-hydroxy(phenyl)retinamide) has been reported to induce high levels of cell death in Ewing sarcoma cell lines in vitro and to delay growth of xenografts in in vivo mouse models.In most pediatric cancers including sarcoma, proton beam radiation (also known as proton therapy) delivers an equally effective dose to the tumor with less damage to the surrounding normal tissue compared to photon radiation. Prognosis
Staging attempts to distinguish people with localized from those with metastatic disease. The most common areas of metastasis are the lungs, bone and bone marrow with less common areas of metastasis being the lymph nodes, liver and brain.