It’s little wonder that many people with a serious mental illness don’t seek medical attention when they need it. As a result, many of us end up in emergency rooms — where doctors, confronted with an endless stream of drug addicts who come to their door looking for an easy fix — are often all too willing to equate mental illness with drug-seeking behavior and refuse to prescribe pain medication.

I should know: a few years ago I had a persistent migraine, and after weeks trying to get an appointment with any of the handful of headache specialists in New York City, I broke down and went to the E.R. My husband filled out paperwork and gave the nurse my list of drugs. The doctors finally agreed to give me something stronger than what my psychopharmacologist could prescribe for the pain and hooked me up to an IV.

I lay there for hours wearing sunglasses to block out the fluorescent light, waiting for the pain relievers to kick in. But the headache continued. “They gave you saline and electrolytes,” my psychopharmacologist said later. “Welcome to being bipolar.”

When I finally saw the specialist two weeks later (during which time my symptoms included numbness and muscle weakness), she accused me of being “a serious cocaine user” (I don’t touch the stuff) and of displaying symptoms of “la belle indifference,” a 19th-century term for a kind of hysteria in which the patient converts emotional symptoms into physical ones — i.e., it was all in my head.

Indeed, given my experience over the last two decades, I shouldn’t have been surprised by the statistics I found in the exhaustive report “Morbidity and Mortality in People with Serious Mental Illness,” a review of studies published in 2006 that provides an overview of recommendations and general call to arms by the National Association of State Mental Health Program Directors. The take-away: people who suffer from a serious mental illness and use the public health care system die 25 years earlier than those without one.

True, suicide is a big factor, accounting for 30 to 40 percent of early deaths. But 60 percent die of preventable or treatable conditions. First on the list is, unsurprisingly, cardiovascular disease. Two studies showed that patients with both a mental illness and a cardiovascular condition received about half the number of follow-up interventions, like bypass surgery or cardiac catheterization, after having a heart attack than did the “normal” cardiac patients.