Comment; Another review of the ongoing problem. Pain patients continue to suffer. Physicians continue to fear repercussions from enforcement agencies such as the DEA & State Medical Boards–rightfully so! They have a license to protect and families to support, if they lose their license, ALL of their patients lose a provider! Enforcement agencies are not well known for leniency and understanding. The system sucks. More abused opioids come from illegitimate sources now, yet practitioners continue to underprescribe due to justified (historically) fear!

Dr. Robert L. Wergin, right, handing a prescription to a pain patient at the Milford Family Medical Center in Milford, Neb.CreditCreditMichael Kirby Smith for The New York Times

By Jan Hoffman and Abby Goodnough

Three years ago this month, as alarms about the over-prescription of opioid painkillers were sounding across the country, the federal government issued course-correcting guidelines for primary care doctors. Prescriptions have fallen notably since then, and the Trump administration is pushing for them to drop by another third by 2021.

But in a letter to be sent to the Centers for Disease Control and Prevention on Wednesday, more than 300 medical experts, including three former White House drug czars, contend that the guidelines are harming one group of vulnerable patients: those with severe chronic pain, who may have been taking high doses of opioids for years without becoming addicted. They say the guidelines are being used as cover by insurers to deny reimbursement and by doctors to turn patients away. As a result, they say, patients who could benefit from the medications are being thrown into withdrawal and suffering renewed pain and a diminished quality of life, even to the point of suicide.

The letter writers form an uneasy alliance spanning differing positions on opioids — professors of addiction medicine as well as pain specialists, some patient representatives who have taken money from the pharmaceutical industry, and the former drug czars, from the Obama, Clinton and Nixon administrations.

Michael Botticelli, who served as the drug czar under President Obama and now leads the Grayken Center for Addiction at Boston Medical Center, said he signed the letter because “there has been enough anecdotal evidence to raise the alarm bells” about the misuse of the guidelines leading to pain patients losing effective treatment.

“The C.D.C. really does need a rigorous evaluation of this because we don’t know how big the problem is,” he said. “Minimally, we need some level of clarification on appropriate use of the guidelines.”

Specifically, the letter asks the C.D.C. to emphatically state that treatment decisions for these patients be left to their doctors.You have 2 free articles remaining.SUBSCRIBE TO THE TIMES

“It is imperative that health care professionals and administrators realize that the guideline does not endorse mandated involuntary dose reduction or discontinuation,” the group wrote in the letter, which it also sent to members of relevant congressional committees.

A spokeswoman for the C.D.C., Julie Eschelbach, said the guidelines “do not endorse mandated or abrupt dose reduction or discontinuation.” She added that the agency has several studies underway to examine the guidelines’ impact, and has published a “pocket guide” for doctors on tapering.

The guidelines are nonbinding, but many of them have become enshrined in state regulations. Therefore, said Dr. Stefan G. Kertesz, an author of the letter who teaches addiction medicine at the University of Alabama at Birmingham, “it’s normal to say from the top: ‘This needs a clarification because we don’t want people hurt.’”

Others say the problem lies not with the guidelines, which urge non-opioid therapies as the first-line treatment for chronic pain, but with their misapplication.

“What the guidelines are being blamed for versus what they actually recommend are two different things,” said Dr. Thomas R. Frieden, who ran the C.D.C. when the guidelines were developed.

Experts in addiction medicine distinguish patients who need opioids for chronic pain from people addicted to the drugs: while some patients are physically dependent and will go into withdrawal if the drugs are withheld, the opioids help them function, despite severe pain.

“But just because you’re on a higher dose doesn’t mean you’re addicted,” said Dr. Daniel P. Alford, a professor who directs addiction medicine education at the Boston University School of Medicine, who signed the letter.

Addiction, he said, is “a behavioral maladaptation where the medication takes over their lives, and they continue to use despite negative consequences.”

The guidelines say doctors should discuss the costs of a high-dose regimen with pain patients and press for a prudent taper. They do not say those patients’ drugs should be summarily reduced. They advise doctors to prescribe opioids to new patients only for a short time, and with a daily dose below 90 morphine milligram equivalents. That recommendation has prompted many states and monitoring systems to impose a hard stop at that level for all patients except those with cancer or in end-of-life care.

“Who says that 90 is a magical threshold?” Dr. Alford asked. “There’s no good evidence. Yes, we should avoid escalating doses, but how do we treat people who are already on high doses?”

Dr. Frieden defended 90 M.M.E., as the measurement is known, as a responsible ceiling. “The death rates just go up exponentially,” he said, for people on very high doses of opioids.

Dr. Frieden said more doctors should be allowed to get federal permission to prescribe buprenorphine, a lower-risk opioid drug that can effectively manage opioid dependence while treating pain, as an alternative to more dangerous painkillers.

(Dr. Frieden was charged last summer with groping a woman; he pleaded not guilty and the case is still pending.)

The letter to the C.D.C. echoes a November resolution by the American Medical Association, which protested the “misapplication” of the guidelines “by pharmacists, health insurers, pharmacy benefit managers, legislatures, and governmental and private regulatory bodies in ways that prevent or limit access to opioid analgesia.”

A central question is how many patients have suffered from their doses being reduced or from being taken off opioids entirely. A report by the inspector general at the Department of Health and Human Services estimated that in 2016 about 500,000 beneficiaries of Medicare drug plans had been getting prescriptions of 120 M.M.E. or greater for three months or longer — a figure that doesn’t fully capture the current affected population.

Accompanying the experts’ letter are testimonials by hundreds of pain patients detailing struggles in the wake of the guidelines.

The opioid prescribing rate has been falling since 2012, but the amount prescribed per person is still about three times higher than it was in 1999, at the beginning of the addiction crisis, according to the C.D.C. While overdose deaths because of prescription opioids have begun leveling off, deaths from illicit fentanyl and its analogues increased by more than 45 percent in 2017 alone, a phenomenon that the letter writers attribute in part to the crackdown on pain pill prescriptions.

Dr. Raymond Oenbrink