RT Journal Article T1 Pre- and perinatal complications in relation to Tourette syndrome and co-occurring obsessive-compulsive disorder and attention-deficit/hyperactivity disorder. A1 Abdulkadir, Mohamed A1 Tischfield, Jay A A1 King, Robert A A1 Fernandez, Thomas V A1 Brown, Lawrence W A1 Cheon, Keun-Ah A1 Coffey, Barbara J A1 de Bruijn, Sebastian F T M A1 Elzerman, Lonneke A1 Garcia-Delgar, Blanca A1 Gilbert, Donald L A1 Grice, Dorothy E A1 Hagstrøm, Julie A1 Hedderly, Tammy A1 Heyman, Isobel A1 Hong, Hyun Ju A1 Huyser, Chaim A1 Ibanez-Gomez, Laura A1 Kim, Young Key A1 Kim, Young-Shin A1 Koh, Yun-Joo A1 Kook, Sodahm A1 Kuperman, Samuel A1 Lamerz, Andreas A1 Leventhal, Bennett A1 Ludolph, Andrea G A1 Madruga-Garrido, Marcos A1 Maras, Athanasios A1 Messchendorp, Marieke D A1 Mir, Pablo A1 Morer, Astrid A1 Münchau, Alexander A1 Murphy, Tara L A1 Openneer, Thaïra J C A1 Plessen, Kerstin J A1 Rath, Judith J G A1 Roessner, Veit A1 Fründt, Odette A1 Shin, Eun-Young A1 Sival, Deborah A A1 Song, Dong-Ho A1 Song, Jungeun A1 Stolte, Anne-Marie A1 Tübing, Jennifer A1 van den Ban, Els A1 Visscher, Frank A1 Wanderer, Sina A1 Woods, Martin A1 Zinner, Samuel H A1 State, Matthew W A1 Heiman, Gary A A1 Hoekstra, Pieter J A1 Dietrich, Andrea K1 Attention-deficit hyperactivity disorder K1 Delivery K1 Obsessive-compulsive disorder K1 Pregnancy K1 Prenatal K1 Tourette syndrome AB Pre- and perinatal complications have been implicated in the onset and clinical expression of Tourette syndrome albeit with considerable inconsistencies across studies. Also, little is known about their role in co-occurring obsessive-compulsive disorder (OCD) and attention-deficit/hyperactivity disorder (ADHD) in individuals with a tic disorder. Therefore, we aimed to investigate the role of pre- and perinatal complications in relation to the presence and symptom severity of chronic tic disorder and co-occurring OCD and ADHD using data of 1113 participants from the Tourette International Collaborative Genetics study. This study included 586 participants with a chronic tic disorder and 527 unaffected family controls. We controlled for age and sex differences by creating propensity score matched subsamples for both case-control and within-case analyses. We found that premature birth (OR = 1.72) and morning sickness requiring medical attention (OR = 2.57) were associated with the presence of a chronic tic disorder. Also, the total number of pre- and perinatal complications was higher in those with a tic disorder (OR = 1.07). Furthermore, neonatal complications were related to the presence (OR = 1.46) and severity (b = 2.27) of co-occurring OCD and also to ADHD severity (b = 1.09). Delivery complications were only related to co-occurring OCD (OR = 1.49). We conclude that early exposure to adverse situations during pregnancy is related to the presence of chronic tic disorders. Exposure at a later stage, at birth or during the first weeks of life, appears to be associated with co-occurring OCD and ADHD. YR 2016 FD 2016-07-22 LK http://hdl.handle.net/10668/10341 UL http://hdl.handle.net/10668/10341 LA en DS RISalud RD Apr 5, 2025