When asking parents and caregivers to complete checklists, it is crucial to make sure that these checklists look for symptoms other than just ADHD, because there are often co-occurring symptoms and disorders. These include oppositional defiant disorder, anxiety, obsessive compulsive disorder, depressive disorders, autism spectrum disorders, trauma, and learning/communication disorders. In fact, the Preschool ADHD Treatment Study (PATS) demonstrated that 71.5% of children with preschool ADHD had at least one other diagnosis and 29.7% had two or more (J. Child Adolesc. Psychopharmacol. 2007;17:563-80). Use of a broad-based instrument that captures all of these domains, in addition to attention, is warranted. In our clinic, we also assess the parents for psychopathology using the same instruments. The reason for this is, first, that family history increases the likelihood of an ADHD diagnosis and, perhaps more importantly, presence of family psychopathology makes treatment more difficult. This is because the treatment you will prescribe is going to actively involve the parents.
The treatment of choice for preschool ADHD, based on practice parameters and expert opinion, is to start with family-based behavioral treatments. There are now several empirically-based treatments that have shown efficacy for the symptoms of inattention and hyperactivity-impulsivity in preschoolers. These include Triple P (“Practitioner’s Manual for Enhanced Triple P” [Brisbane: Families International Publishing, 1998]), The Incredible Years (Webster-Stratton & Hancock, 1998), and the Revised New Forest Parent Program (Daley & Thompson, 2007), among others. If these are not available in your community, other options would be “Helping the noncompliant child: A clinician’s guide to effective parent training,” 2nd ed. (The Guilford Press: New York, 2003) or any other empirically-based parent training program. This is why it is critical to engage the parents in treatment and to refer them for treatment for their own psychopathology, if present. Furthermore, engaging the family in a program of wellness (freedom from substances, enhanced nutrition, avoidance of artificial food coloring, increased exercise), has less of a research base, but the available evidence is that it is helpful.
If medications become necessary because of safety concerns, there are few options that have a Food and Drug Administration indication. Those that do have an indication for disruptive behavior below the age of 5 years (haloperidol, dextroamphetamine, chlorpromazine, and risperidone) should not be considered as first line. The PATS study demonstrated the safety and efficacy of methylphenidate, but with optimal doses lower than those seen in school-aged children (0.7 mg/kg per day) and with increased numbers of adverse effects (11% discontinuing) (J. Am. Acad. Child Adolesc. Psychiatry 2006;45:1284-93; J. Am. Acad. Child Adolesc. Psychiatry 2006;45:1294-303).
Because of the increased amount of side effects, medication treatment cannot be considered as the first treatment. Treatment with nonstimulants is poorly studied. Any treatment with methylphenidate would be considered off-label prescribing, which must be done with great caution and, preferably, in consultation with a child and adolescent psychiatrist.
The diagnosis and management of ADHD in the very young is tricky, but possible. Doing a comprehensive evaluation with information from multiple informants, assessing and treating the parents for psychopathology, engaging the family in wellness, and starting with behavioral management is the way to go. If you feel that medication treatment is necessary for safety of the little ones, it’s best to consult, because none of the medications with FDA indication are likely to be the answer.
Dr. Althoff is associate professor of psychiatry, psychology, and pediatrics at the University of Vermont, Burlington. He is director of the division of behavioral genetics and conducts research on the development of self-regulation in children. Dr. Althoff receives no funding from pharmaceutical companies or industry. He has grant funding from the National Institute of General Medical Sciences and the Klingenstein Third Generation Foundation, and is employed, in part, by the nonprofit Research Center for Children, Youth, and Families that develops the Child Behavior Checklist and associated instruments. E-mail him at pdnews@frontlinemedcom.com.