How to Get Rid of Air Bubbles Under Skin

Air trapped beneath the skin, known medically as subcutaneous emphysema, almost always requires professional medical treatment rather than a home remedy. The air gets there because something has gone wrong deeper in the body, whether from trauma, surgery, infection, or a lung problem, and getting rid of it means addressing that underlying cause while the body gradually reabsorbs the trapped gas. Mild cases often resolve on their own with monitoring, but extensive air under the skin can distort your appearance, compress your airway, and signal a life-threatening condition underneath. Understanding what causes it, what doctors actually do about it, and when to treat it as an emergency can make a real difference in outcomes.

Why Air Gets Trapped Under the Skin

Your body’s soft tissues are not supposed to contain free air. When air does end up beneath the skin, it has escaped from somewhere it was contained, usually the lungs or the airway. The most common mechanism involves air leaking from damaged lung tissue into the surrounding spaces and then tracking outward along natural tissue planes into the fat and connective tissue just below your skin.¹ A continuum of connected tissue layers runs from the neck down through the chest and into the abdomen, so air that starts in one area can spread widely through the body.²

This is why subcutaneous emphysema can look so alarming. Air that enters near the chest can migrate up to the neck, face, and scalp, or down to the abdomen and even the scrotum. The swelling can be dramatic. In case reports of women who developed massive subcutaneous emphysema after robotic pelvic surgery, the physical deformity was described as “remarkable” though it was reversible, lasting up to a week.³

The Most Common Causes

A wide range of problems can push air under the skin. In a study that classified and tracked 35 cases over ten years, the leading causes varied by severity: pneumothorax (a collapsed lung, often related to chronic lung disease or surgery) was the most common cause in the most severe cases, rib fractures from trauma dominated the next tier, and medical procedures accounted for many of the moderate cases.⁴ More broadly, subcutaneous emphysema occurs in association with blunt or penetrating trauma, soft-tissue infections, or any condition that creates a pressure difference between the inside of the lung’s air sacs and the surrounding tissue.²

Some causes that surprise people:

Dental work: Air-driven dental instruments can occasionally force air into the tissues of the face, jaw, or neck. It is rare, but documented, and the swelling can spread rapidly after a routine procedure.⁵
Surgery and medical procedures: Anything involving the airway, chest, or abdomen can introduce air. Laparoscopic and robotic surgeries use gas to inflate body cavities, and that gas sometimes migrates into the subcutaneous tissue.
Diving and rapid pressure changes: During ascent from a dive, dissolved gas can form small bubbles in the tissues or blood vessels if the pressure drops too fast.⁶ This is a distinct condition from typical subcutaneous emphysema, but the sensation of gas under the skin can feel similar.
Infection: Certain bacteria, particularly anaerobic species like Clostridium, produce gas as they multiply in tissue. Gas gangrene is rare but extremely dangerous, and the air under the skin in that case is a symptom of a rapidly spreading, life-threatening infection.⁷

How to Tell If It Is Subcutaneous Emphysema

The hallmark sign is crepitus: a distinctive crackling or popping sensation when you press on the swollen skin. It feels a bit like pressing on bubble wrap or Rice Krispies under the surface. Doctors use this sensation as an immediate bedside diagnostic clue. The skin itself often looks puffy and swollen, sometimes dramatically so, but it typically is not red or hot the way an infection would make it, unless the air is being produced by gas-forming bacteria.

Imaging confirms the diagnosis and, more importantly, reveals the source. A chest X-ray can show air dissecting along tissue planes, and CT scans give a detailed picture of where air has spread and what might be causing the leak. In the ten-year classification study mentioned above, the severity grading ranged from air confined to the base of the neck (grade 1) all the way to air involving the chest wall, neck, eye sockets, scalp, abdomen, arms, and scrotum (grade 5).⁴ Grades 1 and 2 were considered mild enough that symptoms were not significant and those patients were excluded from active intervention in that study.

When It Resolves on Its Own

In many mild cases, the body reabsorbs the trapped air gradually without any specific treatment. Your tissues naturally absorb small amounts of gas over hours to days, much like a small bruise resolves as your body clears the leaked blood. If the underlying cause has been treated or has resolved on its own, such as after a minor surgical complication or a small pneumothorax that has sealed, the air under the skin will diminish on its own. You may notice the crackling feeling lessening over a few days.

High-flow oxygen is sometimes given even in cases that would technically resolve on their own, because breathing concentrated oxygen speeds the process along. The mechanism is straightforward: the trapped gas under your skin is mostly nitrogen, and flooding your bloodstream with oxygen creates a concentration gradient that pulls nitrogen out of the tissue faster.⁸ This is a well-described technique that does not require any incisions or procedures, just a high-flow oxygen mask.

Active Treatments for Moderate to Severe Cases

When the air is extensive, spreading rapidly, or threatening the airway, doctors need to actively remove it. Several methods exist, and the choice depends on severity, the underlying cause, and what resources are available.

Subcutaneous Drains and Catheter Decompression

Placing small drains or catheters directly into the swollen tissue allows air to escape. In one well-documented case of massive subcutaneous emphysema after heart surgery, subcutaneous drains with gentle suction effectively decompressed the head and neck, reduced airway pressure, and cleared the trapped air, avoiding the need for an emergency tracheostomy.⁹ The researchers found this approach safe, effective, and inexpensive. Similarly, small angiocatheters (the same type of thin plastic tubes used for IV lines) can be inserted through the skin to vent trapped air in extensive cases.⁸

Infraclavicular Incisions

For severe cases, surgeons sometimes make small incisions just below the collarbone on both sides, creating “blow holes” that let air escape continuously. In a series of patients treated this way, lung expansion improved and the patients’ physical appearance got noticeably better, with no lasting cosmetic issues from the incisions themselves.⁴ This technique is relatively simple and is one of several described approaches alongside emergency tracheostomy, multisite drainage, and increasing suction on an existing chest drain.¹⁰

Negative Pressure Wound Therapy

A more specialized approach uses negative pressure wound therapy dressings, essentially a sealed vacuum system applied over a wound or incision site, to continuously draw air out of the subcutaneous tissue. This technique has been reported as effective in severe cases where other methods have not fully resolved the emphysema.¹

When Air Under the Skin Means an Emergency

Not every case of subcutaneous emphysema is a crisis, but some are genuinely dangerous. The air itself is usually not the main threat. What makes it an emergency is what the air signals about what is happening deeper in your body, and sometimes the sheer volume of trapped gas causing compression.

You should seek emergency care if you notice:

Rapid spread: If the swelling is visibly expanding over minutes to hours, especially if it is moving up toward your neck and face, the underlying air leak may be ongoing and worsening.
Difficulty breathing or swallowing: Air accumulating around the neck and throat can compress the airway. This is the most immediately dangerous complication of severe subcutaneous emphysema, and it is why some cases require emergency tracheostomy.
Pain, redness, and fever with crepitus: This combination suggests a gas-forming infection rather than a simple air leak. Gas gangrene and necrotizing fasciitis progress within hours and require immediate surgery and antibiotics. The crackling under the skin in this situation is not just trapped air; it is a byproduct of bacteria destroying tissue.
Crepitus after trauma: If you feel crackling under the skin after a blow to the chest, a fall, or a car accident, you may have a pneumothorax or rib fractures that are allowing air to escape.

The Role of Hyperbaric Oxygen

Hyperbaric oxygen therapy, where you breathe pure oxygen in a pressurized chamber, has a specific role when the air under the skin is caused by certain infections. It works by flooding tissues with oxygen levels far beyond what normal breathing delivers. For anaerobic bacteria like Clostridium species that cause gas gangrene, this high-oxygen environment is directly hostile because these organisms cannot survive when oxygen levels are high.¹¹ Hyperbaric oxygen has been described as useful for deep and chronic infections including necrotizing fasciitis, chronic soft tissue infections, and gas gangrene.¹²

It is also used for compromised wounds, crush injuries, and compartment syndrome where tissue oxygen supply is critically low.¹³ For non-infectious subcutaneous emphysema, hyperbaric oxygen is not a standard treatment. The high-flow oxygen approach described earlier (just breathing concentrated oxygen through a mask) achieves the nitrogen-washout effect without a pressurized chamber. Hyperbaric therapy is reserved for the subset of cases where infection is the driving problem.

What You Cannot Do at Home

There is no safe home remedy for subcutaneous emphysema. You cannot squeeze the air out, pop it, or massage it away. Attempting to puncture swollen skin with a needle risks introducing infection into the tissue and does not address the underlying air source. The air is not in a single pocket you could drain; it is dispersed through layers of connective tissue, sometimes across large areas of the body. Even the medical interventions described above require sterile technique and monitoring.

What you can do at home, if a doctor has evaluated you and determined the case is mild, is simply wait. In those situations, the doctor has already confirmed there is no dangerous underlying cause and expects the air to reabsorb on its own. You might be told to watch for signs of worsening: spreading swelling, breathing difficulty, fever, or increasing pain. If any of those develop, that changes the picture from “wait and reabsorb” to “get back to the emergency department.”

Post-Surgical Subcutaneous Emphysema

One of the more common settings where people encounter air under their skin is after surgery, particularly procedures involving the chest, abdomen, or airway. Laparoscopic and robotic surgeries pump carbon dioxide into the abdominal cavity to create working space, and that gas occasionally tracks into subcutaneous tissue. The cases of massive swelling after robotic pelvic surgery are an extreme example, but milder versions happen more often.³

Post-surgical subcutaneous emphysema typically resolves within a few days as the body absorbs the gas. Carbon dioxide, which is the gas used in laparoscopic surgery, is actually absorbed faster than room air because it diffuses more readily into blood. If the emphysema worsens after surgery instead of improving, that can signal a complication like a bronchial leak or an injured airway that needs investigation.

How It Happens in Animals

Subcutaneous emphysema is not unique to humans. It occurs in dogs, cats, horses, and other animals, with many of the same causes. A case report of a German Shepherd that developed generalized subcutaneous emphysema after a dog fight revealed a fractured cricoid cartilage and a detachment of the cartilage from the trachea, allowing air to escape with every breath into the surrounding tissue.¹⁴ The dog developed not only subcutaneous emphysema but also air in the mediastinum and retroperitoneum, mirroring the way air tracks through connected tissue planes in humans.

A survey of veterinary practice found that the choice of diagnostics and treatment for subcutaneous emphysema in dogs varied based on the cause and severity. CT scanning was selected more frequently for trauma cases by board-certified veterinarians in teaching hospitals, and intermittent subcutaneous drainage and exploratory surgery were the preferred treatments when the emphysema was classified as severe and generalized.¹⁵ If your pet develops sudden swelling with a crackling texture under the skin, the same urgency applies as in humans: get to a veterinarian promptly, because the air is a symptom of something that needs treatment, not just a cosmetic problem.

Diving-Related Gas Under the Skin

Divers encounter a distinct version of this problem. During ascent from depth, dissolved gases in the blood and tissues can come out of solution and form bubbles if the ascent is too fast or decompression stops are skipped. These bubbles may lodge in joints (the classic “bends”), block blood vessels, or accumulate in subcutaneous tissue, producing a condition sometimes called “skin bends” that causes mottled, itchy skin with a marbled appearance.⁶

The treatment for decompression illness is recompression in a hyperbaric chamber, which shrinks the bubbles and allows the gas to redissolve into the blood so it can be carried to the lungs and exhaled normally. This is fundamentally different from the subcutaneous emphysema caused by trauma or surgery, even though both involve gas where it should not be. If you have been diving and notice crackling, mottling, or unusual swelling under your skin, the correct response is to contact emergency diving medicine services immediately. Surface-level oxygen should be started as soon as possible while arranging transport to a hyperbaric facility.

1
PubMed Central. Case Report: Treatment of Severe Subcutaneous Emphysema With a Negative Pressure Wound Therapy Dressing
2
JAMA Internal Medicine. Subcutaneous and Mediastinal Emphysema: Pathophysiology, Diagnosis, and Management
3
PubMed Central. Massive subcutaneous emphysema in robotic sacrocolpopexy
4
PubMed Central. Classification and Management of Subcutaneous Emphysema: a 10-Year Experience
5
PubMed Central. Subcutaneous Emphysema after a Dental Procedure
6
PubMed Central. Decompression illness: a comprehensive overview
7
PubMed Central. Clostridial Gas Gangrene – A Rare but Deadly Infection: Case series and Comparison to Other Necrotizing Soft Tissue Infections
8
JACEP Open. Extensive subcutaneous emphysema treated with subcutaneous angiocatheters
9
PubMed Central. The use of subcutaneous drains to manage subcutaneous emphysema
10
International Journal of Surgery Case Reports. Management of extensive surgical emphysema with subcutaneous drain: A case report
11
PubMed. Hyperbaric oxygen therapy
12
PubMed. Hyperbaric oxygen therapy: Antimicrobial mechanisms and clinical application for infections
13
PubMed Central. Hyperbaric oxygen and wound healing
14
PubMed Central. Generalized subcutaneous emphysema caused by concurrent cricoid cartilage fracture and cricotracheal detachment in a German shepherd dog
15
PubMed. Survey of current trends in the management of traumatic subcutaneous emphysema in dogs