Hayfever linked to depression, but not anxiety
Immune responses in seasonal allergic rhinitis (SAR) can lead to clinical depression, according to a landmark study.
Inflammatory cytokines led to an increase in depressive symptoms with one in 20 patients experiencing clinical depression, the US and German researchers found.
An increase in depressive symptoms was also linked to sleep disturbances due to nasal congestion and early-age onset SAR.
While other studies had shown a link between depression and allergic rhinitis, these were based on patient self-reporting, the researchers wrote in Brain,