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A clinical trial of 125 young adults shows that those who limited screen time for 48 hours immediately after suffering a concussion had a significantly shorter duration of symptoms than those who were permitted screen time. These findings, published in JAMA Pediatrics, offer the first clinical evidence that restricting time spent at a computer, television or phone screen in the acute period following a concussion can reduce the duration of symptoms. The study supports preliminary clinical recommendations to limit screen time.

An estimated 2.5 million people go to the emergency department annually because of concussions. Many of these patients are children aged 10 to 19 years old. In 2017, 15 percent of high schoolers had reported being diagnosed at least once with a concussion.

The U.S. Centers for Disease Control and the International Concussion in Sports Group recommend a period of complete cognitive and physical rest for 24 to 48 hours following a concussion diagnosis. Yet, there are no clear guidelines regarding what constitutes cognitive rest during this period.

“It’s one thing parents and children always ask in the emergency department,” said lead author Theodore E. Macnow, MD, assistant professor of pediatrics. “Is screen time allowed?”

The average American teen spends as much as seven hours a day in front of a screen, not including time spent doing schoolwork, amoxicillin vs augmentin for pediatric sinusitis and many clinicians caution against screen time following a concussion, said Dr. Macnow. Other clinicians, however, believe limited screen time, so long as it doesn’t induce symptoms, is permittable as one of the few forms of safe distraction during this time.

“We’re still learning how to treat concussions and there are no clear recommendations regarding screen time,” said Macnow. “Nobody has yet looked at this question in a rigorous way. We wanted to get a better handle on this question, so we conducted a randomized clinical trial.”

From June of 2018 to February of 2020, Macnow and colleagues assessed 125 patients age 12 to 25 who presented with a concussion to the Emergency Department at UMass Memorial Medical Center, the clinical partner of UMass Chan Medical School in Worcester. Patients were assessed and randomly placed in one of two cohorts. The first cohort was instructed to abstain from any electronic screens for 48 hours, while the second group was allowed any form of screen so long as it didn’t induce symptoms. Both groups were advised to avoid work and schoolwork for the first 48 hours.

Patients completed a Post-Concussion Symptom Scale (PCSS) at the time of diagnosis and every day for the 10-day study. The PCSS is a 22-symptom scale, which grades each symptom from 0 (not present) to 6 (severe) and reliably detects change over time in concussed patients. In the absence of a head injury, a baseline score of less than 3 on the PCSS survey is considered normal. Additionally, patients completed a screen time survey on days one to three and an activity survey from days four to 10.

An analysis of the data showed that the group permitted screen time during the initial 48 hours after a concussion experienced a significantly longer time to recover, measured by a PCSS score of less than three. On average, this group experienced a median time of eight days until symptom resolution compared to 3.5 days for the group that abstained from screen time. During this time, the cohort permitted screen time logged a median of 630 minutes over the 48-hour period while the cohort abstaining from screen time logged a median of 130 minutes.

“These findings support the conclusion that brief screen time abstinence following a concussion is associated with a faster recovery,” said Macnow. “Given this data, preliminary clinical recommendations should be to limit screen time.”

Macnow added, “It’s not clear why screen time exacerbated concussion symptoms but there are a lot of reasons to suspect it’s not good.” Macnow said. It’s possible that electronic photons, which are known to triggers migraines, could play a role. Or that screen use may detract from sleep and resumption of normal activities, both of which are felt to be beneficial to concussion recovery.

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