Medically reviewed by Dr. David L. Greenwald, MD, FAANS, FACS — dual board-certified spine surgeon & neurosurgeon. Last reviewed October 2026.

The discs between your vertebrae cushion the spine and let it bend and twist. When a disc bulges, tears, herniates, or wears down, it can cause back or neck pain — and sometimes nerve pain that travels into an arm or leg. Desert Spine and Pain diagnoses and treats the full range of intervertebral disc disorders in Phoenix, least-invasive-first.

The Main Types of Disc Disorders

What Are Disc Disorders?

Between each pair of vertebrae sits an intervertebral disc — a tough, rubbery cushion with a firm outer ring (the annulus) and a soft gel-like center (the nucleus). These discs absorb the shock of every step, bend, and twist, and keep the spine flexible. A disc disorder is any problem affecting one of these cushions: a disc that bulges beyond its normal edge, one that herniates when its inner gel pushes through a tear in the outer wall, a crack in the annulus itself, or a disc that gradually wears down with age. Because every disc sits only millimeters from the nerve roots and spinal cord, a disc problem can cause far more than local back pain — it can send pain, numbness, tingling, or weakness radiating into an arm or down a leg.

Many people searching for a herniated disc specialist in Phoenix use terms like "slipped disc," "bulging disc," or simply "disc problems." A "slipped disc" is just a common name for a herniated disc — nothing actually slips out of place. What matters is less the label than which disc is affected, whether a nerve is involved, and how much it is interfering with your life. At Desert Spine and Pain, Dr. Greenwald evaluates and treats the complete range of disc disorders. Because he is both a board-certified spine surgeon and a neurosurgeon, the mechanical side of the disc and the delicate nerves around it are assessed by a single expert — and treatment always starts with the least-invasive option that will actually work. Most disc problems never require an operation, and we exhaust conservative care and interventional pain options before surgery is ever discussed.

Disc Disorders We Treat

"Disc disorder" is an umbrella term for several distinct conditions, each with its own pattern of symptoms and its own best treatment. Part of our job is to identify precisely which one you have — and whether a nerve is being compressed. These are the disc conditions we diagnose and treat:

Symptoms of a Disc Disorder

Disc disorders don't all feel the same. Some bulging and early degenerative discs cause no symptoms at all and are only discovered incidentally on imaging done for another reason. When a disc does cause trouble, the symptoms depend on which disc is affected and whether it is irritating or compressing a nearby nerve. Common signs include:

• Back or neck pain. A deep ache or sharp pain centered in the low back or neck, often worse with sitting, bending, lifting, coughing, or sneezing — and sometimes eased by lying down or changing position.
• Radiating arm or leg pain. When a lumbar (lower back) disc presses on a nerve, pain can shoot into the buttock and down the leg — the classic pattern of sciatica. When a cervical (neck) disc is involved, pain can travel into the shoulder, arm, or hand.
• Numbness and tingling. A pins-and-needles sensation, numbness, or a feeling of "falling asleep" in a specific part of the arm, hand, leg, or foot that maps to the pinched nerve.
• Muscle weakness. Weakness in the muscles served by a compressed nerve — difficulty lifting the foot, gripping, or pushing — which should always be evaluated promptly.
• Stiffness and reduced range of motion. A sense that the back or neck is "locked up," making it hard to bend, twist, or turn comfortably.

Symptoms can come on suddenly after a specific movement or injury, or build gradually over weeks and months. Pain that keeps you from working, sleeping, or doing the things you love — or any new weakness — is a signal to get evaluated rather than wait it out.

What Causes Disc Disorders?

Disc disorders usually develop from a combination of everyday wear and specific stress on the spine, rather than a single cause. The most common contributors include:

• Age-related degeneration. Discs naturally lose water and height over the years, becoming less flexible and more prone to bulging, tearing, and herniating. This gradual wear is the single most common reason discs begin to fail.
• Repetitive strain and lifting. Years of heavy lifting, twisting, bending, or sitting with poor posture place repeated load on the discs and can accelerate breakdown.
• Trauma and accidents. A fall, sports injury, or car accident can herniate or tear a disc outright, or speed the degeneration of a disc that was already vulnerable. For accident-related injuries we document findings carefully and coordinate with your personal-injury attorney.
• Genetics and body mechanics. A family history of disc problems, as well as the natural shape and alignment of your spine, can make some people more susceptible than others.
• Lifestyle factors. Smoking, excess body weight, and a sedentary routine all place added or impaired-healing stress on spinal discs over time.

Often several of these factors combine — for example, a disc weakened by years of degeneration that finally herniates during an otherwise ordinary lift or twist. Understanding how your disc problem developed helps us treat it and reduce the chance of it recurring.

How Disc Disorders Are Diagnosed

An accurate diagnosis is the foundation of effective treatment — and it is more nuanced than simply reading a scan. Many disc findings seen on an MRI never cause any symptoms, so the real goal is to confirm that a specific disc is the actual source of your pain. Dr. Greenwald's evaluation typically includes:

• History and physical exam. A detailed discussion of your symptoms, how they started, and what makes them better or worse, followed by an exam of your strength, reflexes, sensation, and movement to localize the problem.
• Advanced imaging. An MRI is the most useful study for discs — it shows the soft disc tissue and whether it is contacting a nerve. X-rays or a CT scan may be added to assess alignment, instability, or bone.
• Nerve testing when needed. In select cases, electrodiagnostic studies (EMG/nerve conduction) help confirm which nerve is affected and rule out other causes of arm or leg symptoms.

Because he is both a spine surgeon and a neurosurgeon, Dr. Greenwald reads your imaging with a surgeon's eye for nerve involvement — correlating what the scan shows with what your exam and your story reveal. That correlation is what separates an incidental finding from the true pain generator, and it is what allows a focused, least-invasive treatment plan instead of a scattershot one.

Treatment Options for Disc Disorders

There is a wide spectrum of treatment for disc disorders, and the right choice depends on which disc is involved, whether a nerve is compressed, and how your symptoms respond over time. We work through that spectrum from the least invasive end first:

• Conservative care. Activity modification, targeted physical therapy, anti-inflammatory and other medications, and time — which resolves the majority of disc problems without any procedure at all.
• Image-guided injections. When pain persists or a nerve is inflamed, precisely placed epidural steroid injections and related interventional procedures can calm the irritation and often restore function without surgery.
• Minimally invasive surgery. For a herniation that won't settle or is causing nerve compression, a small, targeted procedure such as a microdiscectomy can remove the offending disc fragment through a tiny incision.
• Reconstruction or motion preservation. When a disc must be removed entirely, options include an ACDF in the neck, a motion-preserving artificial disc replacement, or a lumbar fusion when the segment needs to be stabilized.

Only a minority of disc disorders ever reach the surgical end of this spectrum — and when they do, it's usually a small, targeted procedure rather than a large open operation.

How We Diagnose & Treat Disc Disorders

Many disc findings on an MRI never cause symptoms, so the first step is confirming that a specific disc is the real source of your pain. Dr. Greenwald combines a focused exam with imaging (and nerve testing when needed), and — as both a spine surgeon and a neurosurgeon — reads your scans with a surgeon's eye for nerve involvement.

From there we follow a least-invasive-first path. Most disc disorders improve with conservative care and, when needed, image-guided injections — and only a minority ever require surgery. When surgery is the right answer, it's typically a small, targeted, minimally invasive procedure rather than a large operation. You'll always hear an honest recommendation: if a less-invasive option could work first, we'll tell you.

When to See a Spine Specialist

Most mild disc pain settles with rest and time. But certain signs mean it's worth having a spine specialist evaluate you sooner rather than later:

• Pain that isn't improving. Back, neck, arm, or leg pain that persists beyond a few weeks despite rest, activity changes, and over-the-counter measures.
• Radiating or worsening symptoms. Pain, numbness, or tingling that travels into an arm or leg — especially if it is spreading or getting stronger.
• New or progressing weakness. Difficulty lifting the foot, gripping, or trusting a leg or arm, which can signal meaningful nerve compression.
• Pain that disrupts your life. Symptoms that keep you from working, sleeping, or doing the activities that matter to you.

Proudly Serving the Greater Phoenix, Arizona Area

Why Choose Our Disc Disorder Specialists in Phoenix

At Desert Spine and Pain, disc disorders are treated by a specialist who is both a board-certified spine surgeon and a neurosurgeon — so both the mechanical and the neurological sides of your disc problem are evaluated by one expert. We welcome out-of-network patients, require no referral, and partner closely with personal-injury attorneys for accident-related disc injuries (24/7 concierge response, documentation, and coordination).

Disc Disorders: Frequently Asked Questions