Not only are seasonal allergies associated with major depressive disorder and panic disorder, they are also associated with generalized anxiety disorder and post-traumatic stress disorder, according to a study published in the Journal of Affective Disorders.
Researchers in this study used data from the Comprehensive Psychiatric Epidemiology Surveys to analyze a sample of adults in the United States (N=10,309) and examine possible associations between a number of common psychiatric conditions and allergies or asthma. The data was also analyzed to assess whether comorbidity between psychiatric conditions confounded the relationship between atopy and each individual condition.
The Composite International Diagnostic Inventory was used to assess the data for lifetime history of MDD, GAD, PD, and PTSD. History of asthma and seasonal allergies were assessed by self-report. The association between asthma and allergies and psychopathology was evaluated using weighted logistic regression, and psychiatric comorbidities were examined as possible confounders.
I totally can see this as true. Does anyone one remember the antihistimine called Seldane? They took it off the market because they said it caused heart problems. I took it for a few years and those were the most productive years of my life. I have also heard that antihistimines and anti- despressants (some) have similar chemical structures. That could be why Seldane was great for my allergies and also may have treated my undiagnosed depression.