TNF and attention deficit-hyperactivity disorder: As seen in Figure 2B, the tendency of TNF-α concentrations showed by patients with AD subtype and ODCD was the opposite to the ones with ODCD in the ADHD-C presentation (4.66 ± 5.69 vs. 8.13 ± 11.84 pg/mL, without and with ODCD in ADHD-AD, respectively; 8.39 ± 9.47 vs. 4.30 ± 2.82 pg/mL in ADHD-C without and with ODCD, respectively).