Graduated from Medical School Universidad Autónoma, Madrid, Spain, in 1992, became Adult Psychiatrist in December 1997 and Specialist in Child Psychiatry with a Diploma in the Institute of Psychiatry, Kings College, London in 1999. Doctor in Medicine, University Alcala, European Program.
Consultant in Psychiatry at the Hospital Gregorio Marañón in Madrid, at the Department of Child and Adolescent Psychiatry, since 2000. Dr Parellada holds an Assistant Professor Position at the School of Medicine, Universidad Complutense, Madrid and an Associate Visiting Professorship at the University of California in San Francisco, US. She has been conducting research and publishing in the area of first episodes of psychosis since 2003. She is an international trainer in the ADOS-2 since 2013.
Member of the CIBERSAM, Center for the National Research on Mental Health, through the Child and Adolescent Psychiatry Department, Instituto de Investigación Sanitaria Gregorio Marañón, at the HGUGM, in the last 16 years she has been the leader of the autism line of research of the group, to study the biological bases of autism spectrum disorders. This has gone in parallel with the set up and coordination of the first clinic in Spain for medical problems of ASD, AMITEA, where more than 4500 patients have been attended. She has published more than 200 papers in peer-review journals and has been P.I. of several peer-reviewed national and European public- and private-funded grants that study biological basis of autism and the overlap between autism and early-onset schizophrenia.