WEDNESDAY, Jan. 16, 2019 (HealthDay News) -- U.S. dermatologists are prescribing fewer antibiotics overall but are writing more short-term orders for the drugs, a new study finds.
Dermatologists prescribe more antibiotics per doctor than any other medical specialty -- more than 7.1 million prescriptions per year, the University of Pennsylvania researchers said.
According to their analysis of 2008-2016 data from privately insured patients, antibiotic prescriptions by dermatologists fell from 3.36 to 2.13 per 100 visits. That works out to about 500,000 fewer antibiotic prescriptions a year.
The drop was significant among patients taking extended courses of antibiotics -- down 53 percent over the study period. That includes a 28 percent reduction in antibiotic prescriptions for acne, the study authors said.
But the investigators found a nearly 70 percent surge in short-term use of antibiotics, especially for skin-surgery patients. Those prescriptions rose from 3.92 to 6.65 per 100 visits.
In addition, antibiotic prescriptions associated with cysts increased 35 percent, according to the study published Jan. 16 in JAMA Dermatology.
Many dermatological patients, including those taking antibiotics for inflammatory skin conditions such as acne and rosacea, may stay on antibiotics for long periods. That's an issue, because overuse of antibiotics can lead to reduced effectiveness, the researchers explained.
"Overall, our findings are hopefully a sign that we're making progress, but we need to evaluate how we can optimize the use of antibiotics in dermatologic surgery," lead study author Dr. John Barbieri said in a university news release.
That includes more studies to determine which skin surgery patients benefit most from antibiotics, he said. Barbieri is a dermatology research fellow at Penn.
While prescription rates were down overall, the types of antibiotics used and length of treatment remained the same, the findings showed.
"This may be a sign that treatment guidelines have raised awareness about overuse, though it's also noteworthy that there are biologic and other alternate treatments that give patients more options than they've ever had before," Barbieri added.
The American Academy of Family Physicians has more on antibiotics.