Dissociative symptoms include a sense of numbing or detachment from emotional reactions, a sense of physical detachment –  such as seeing oneself from another perspective –  decreased awareness of ones surroundings, the perception that ones environment is unreal or dreamlike, and the inability to recall critical aspects of the traumatic event (dissociative amnesia).In addition to these characteristics, ASD can be present in the following symptom clusters: intrusion, negative mood, disassociation, avoidance of distressing memories and emotional arousal. Intrusion symptoms include recurring and distressing dreams, flashbacks, or memories related to the traumatic event and related somatic symptoms. Emotional arousal symptoms include sleep disturbances, hypervigilance, difficulties with concentration, more common startle response, and irritability. Complications
There are a number of issues that can arise from acute stress. Depression, anxiety, mood disorders, and substance abuse problems can develop from acute stress. Untreated ASD can also lead to the development of post-traumatic stress disorder. Causes
There are several theoretical perspectives on trauma response, including cognitive, biological, and psycho-biological. While PTSD-specific, these theories are still useful in understanding acute stress disorder, as the two disorders share many symptoms. A recent study found that even a single stressful event may have long-term consequences on cognitive function. This result calls the traditional distinction between the effects of acute and chronic stress into question. Pathophysiology
Stress is characterised by specific physiological responses to adverse or noxious stimuli.
Inflammatory myofibroblastic tumor (IMT) is a rare neoplasm of the mesodermal cells that form the connective tissues which support virtually all of the organs and tissues of the body. IMT was formerly termed inflammatory pseudotumor. Currently, however, inflammatory pseudotumor designates a large and heterogeneous group of soft tissue tumors that includes inflammatory myofibroblastic tumor, plasma cell granuloma, xanthomatous pseudotumor, solitary mast cell granuloma, inflammatory fibrosarcoma, pseudosarcomatous myofibroblastic proliferation, myofibroblastoma, inflammatory myofibrohistiocytic proliferation, and other tumors that develop from connective tissue cells. Inflammatory pseudotumour is a generic term applied to various neoplastic and non-neoplastic tissue lesions which share a common microscopic appearance consisting of spindle cells and a prominent presence of the white blood cells that populate chronic or, less commonly, acute inflamed tissues.Inflammatory myofibroblastic tumor was initially regarded as a benign tumor that most often developed in the lung and less commonly in almost any organ system or tissue. Over time, however, IMT cases occurred in which the tumor spread into local tissues, metastasized to distal tissues, recurred after treatment, or consisted of neoplastic cells that had pro-malignant chromosome abnormalities. Consequently, the World Health Organization, 2013, and current literature commonly describe inflammatory myofibroblastic tumor as a neoplasm with intermediate malignant potential or a rarely metastasizing neoplasm. In 2020, the World Health Organization reclassified IMT as a specific tumor form in the category of intermediate (rarely metastasizing) fibroblastic and myofibroblastic tumors.