Diagnosing the Wrong Deficit
By Vatsal G. Thakkar (clinical assistant professor of psychiatry at the
N.Y.U. School of Medicine)
April 27, 2013
In the spring of 2010, a new patient came to see me to find out if he had attention-deficit hyperactivity disorder (A.D.H.D.). He had all the classic symptoms: procrastination, forgetfulness, a propensity to lose things and, of course, the inability to pay attention consistently. But one thing was unusual. His symptoms had started only two years earlier, when he was 31. Though I treat a lot of adults for attention-deficit hyperactivity disorder, the presentation of this case was a violation of an important diagnostic criterion: symptoms must date back to childhood. It turned out he first started having these problems the month he began his most recent job, one that required him to rise at 5 a.m., despite the fact that he was a night owl.
The patient didn’t have A.D.H.D., I realized, but a chronic sleep deficit. I suggested some techniques to help him fall asleep at night, like relaxing for 90 minutes before getting in bed at 10 p.m. If necessary, he could take a small amount of melatonin. When he returned to see me two weeks later, his symptoms were almost gone. I suggested he call if they recurred. I never heard from him again.
Many theories are thrown around to explain the rise in the diagnosis and treatment of A.D.H.D. in children and adults. According to the Centers for Disease Control and Prevention, 11 percent of school-age children have now received a diagnosis of the condition. I don’t doubt that many people do, in fact, have A.D.H.D.; I regularly diagnose and treat it in adults. But what if a substantial proportion of cases are really sleep disorders in disguise? For some people – especially children – sleep deprivation does not necessarily cause lethargy; instead they become hyperactive and unfocused. Researchers and reporters are increasingly seeing connections between dysfunctional sleep and what looks like A.D.H.D., but those links are taking a long time to be understood by parents and doctors.
We all get less sleep than we used to. The number of adults who reported sleeping fewer than seven hours each night went from some 2 percent in 1960 to more than 35 percent in 2011. Sleep is even more crucial for children, who need δ sleep – the deep, rejuvenating, slow-wave kind – for proper growth and development. Yet today’s youngsters sleep more than an hour less than they did a hundred years ago. And for all ages, contemporary daytime activities – marked by nonstop 14-hour schedules and inescapable melatonin-inhibiting iDevices – often impair sleep. It might just be a coincidence, but this sleeprestricting lifestyle began getting more extreme in the 1990s, the decade with the explosion in A.D.H.D. diagnoses.
(www.nytimes.com. Adaptado.)
Segundo o texto, um dos sintomas do distúrbio de hiperatividade com déficit de atenção é
