Third, a possible explanation for the observed relationship ad to atypical depression patients actually incurring more traumatic events than non atypical depression patients. It remains possible that early trauma has a causal influence on later development of atypical depression. However, this does du not explain increased trauma following depression onset alternatively, other factors, such as a chaotic environment anxious ambivalent attachment styles, and personality re pathology, determining poor relationship choices and interpersonal problems could be associated with bot pa increased trauma and depressive illness. It is also possible he that trauma and atypical depression have a complex and potentially bidirectional relationship. For instance, trauma may induce atypical depression features through to responses of the central nervous system chromosomal changes and interplay with genes while atypical depression may make one more prone to trauma through ex its characteristic mood state. Any of these possibilities would be consistent with findings that victims of trauma co are more likely than non victims to experience subsequent traumas