Purging

Purging Disorder

Regular use of vomiting, laxatives, or other compensatory behaviors to control weight, without the binge eating that defines bulimia.

What it is

Purging Disorder involves regular self-induced vomiting, laxative or diuretic misuse, or other compensatory behavior used to control weight or shape — without the binge eating episodes that define bulimia. Someone with purging disorder purges after eating a typical or even small amount of food.

Signs & symptoms

Causes & risk factors

Similar risk factors to bulimia — body image pressure, anxiety-proneness, and often co-occurring mood or anxiety disorders. It’s currently classified diagnostically under OSFED rather than having its own standalone DSM-5 listing.

Related conditions

Purging disorder is most often compared with bulimia, since the purging behavior itself looks identical from the outside.

Treatment

Treatment follows a similar path to bulimia — therapy alongside medical monitoring, since purging carries real physical risk independent of what precedes it. See our full guide to levels of care for how the right starting point is determined.

Myths vs. facts

Myth: Purging disorder is just a mild form of bulimia. The medical risk from purging itself — electrolyte imbalance, dental erosion, esophageal irritation — is comparable to bulimia’s, independent of whether a binge preceded it. Myth: If there’s no binge, it’s not serious. The physical risk comes from the purging behavior, not from the binge — this is exactly why purging disorder warrants the same medical attention as bulimia, regardless of what’s eaten beforehand. Myth: Purging disorder has its own DSM-5 category, like bulimia does. It’s currently classified under OSFED rather than having a standalone DSM-5 listing — but that’s a diagnostic distinction, not an indication that it’s viewed as less serious.

What treatment actually looks like

Treatment closely mirrors bulimia’s approach: therapy (commonly CBT) targeting the urge to purge and the body image or weight concerns driving it, alongside medical monitoring for electrolyte imbalances that can affect heart rhythm. Because purging disorder doesn’t involve the same eating pattern as bulimia, some of the specific triggers addressed in therapy differ — but the physical risk and the general treatment structure are similar.

Frequently asked questions

Is purging disorder less dangerous than bulimia because there’s no binge?

No — the medical risk from purging behavior itself is comparable regardless of what preceded it. It’s the purging, not the binge, that drives most of the physical risk.

Why isn’t purging disorder its own DSM-5 diagnosis?

It’s currently classified under the OSFED category rather than having a standalone listing, which is a diagnostic classification decision — it doesn’t reflect how clinically significant or serious the condition is treated.