Painful lumps in the underarm (axilla) are a common but often alarming condition. The image above shows a swollen, inflamed underarm lesion with multiple pus-filled openings, discoloration, and surrounding redness—features that strongly suggest an infected abscess or advanced inflammatory skin condition. These types of lesions can be extremely uncomfortable and, if ignored or treated incorrectly, may lead to serious complications.
This article explains what underarm abscesses are, why they occur, how to recognize warning signs, and the safest ways to manage and prevent them.
Understanding Underarm Abscesses
An abscess is a localized collection of pus that forms when bacteria invade the skin and the body’s immune system responds. The underarm is particularly vulnerable because it contains:
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Many sweat glands
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Hair follicles
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Warm, moist skin folds
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Constant friction from arm movement
When bacteria become trapped under the skin, an infection can develop, leading to swelling, pain, and pus formation.
What the Image Suggests
The visible features in the image include:
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A raised, swollen mass in the armpit
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Multiple pus-filled points (draining sinuses)
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Red, inflamed surrounding skin
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Dark and yellowish discoloration indicating infection
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Tenderness and pressure when touched
These signs point to a severe abscess or a condition such as hidradenitis suppurativa, rather than a simple pimple.
Common Causes of Underarm Abscesses
1. Bacterial Infection
Most abscesses are caused by bacteria such as Staphylococcus aureus. The bacteria can enter through:
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Shaving cuts
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Ingrown hairs
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Blocked sweat glands
2. Hidradenitis Suppurativa (HS)
HS is a chronic inflammatory skin disease that affects areas with sweat glands, especially the armpits and groin. It causes:
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Recurrent painful nodules
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Multiple abscesses
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Draining tunnels under the skin
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Scarring over time
3. Poor Hygiene or Excessive Sweating
Sweat and bacteria buildup can block follicles and trigger infection.
4. Friction and Tight Clothing
Constant rubbing can irritate the skin, making it easier for bacteria to enter.
5. Weakened Immune System
People with diabetes, obesity, or weakened immunity are at higher risk.
Symptoms to Watch For
An underarm abscess often begins subtly and worsens over time. Symptoms may include:
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A tender lump under the skin
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Increasing pain and swelling
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Warmth around the area
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Red or purple skin discoloration
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Pus or foul-smelling drainage
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Fever or fatigue in severe cases
If multiple pus points appear, this indicates a more advanced or chronic infection.
Why Underarm Abscesses Should Not Be Ignored
Untreated abscesses can lead to serious complications, such as:
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Spread of infection to surrounding tissue
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Formation of sinus tracts (tunnels under the skin)
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Chronic scarring and skin damage
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Bloodstream infection (rare but dangerous)
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Repeated flare-ups causing long-term discomfort
Squeezing or popping the abscess at home greatly increases these risks.
Safe and Effective Treatment Options
1. Medical Evaluation
A healthcare professional can assess whether the abscess requires:
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Antibiotics
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Drainage under sterile conditions
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Long-term treatment if chronic
2. Warm Compresses (Early Stage Only)
Applying a warm compress may help small, early lumps drain naturally—but only if advised by a professional.
3. Antibiotic Therapy
Doctors may prescribe topical or oral antibiotics depending on severity.
4. Surgical Drainage
Large or painful abscesses often require controlled drainage by a professional to prevent spreading infection.
5. Long-Term Management (for HS)
Chronic cases may need:
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Ongoing medical care
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Lifestyle adjustments
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Specialized dermatologic treatment
What NOT to Do
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❌ Do not squeeze or puncture the abscess
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❌ Do not apply harsh chemicals or home remedies
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❌ Do not ignore worsening pain or drainage
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❌ Do not shave over infected skin
These actions can worsen infection and cause scarring.
Prevention Tips
To reduce the risk of underarm abscesses:
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Keep the area clean and dry
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Wear loose, breathable clothing
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Avoid aggressive shaving
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Use clean razors or alternatives
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Manage excessive sweating
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Seek early medical advice for recurring lumps
When to Seek Immediate Medical Help
You should see a healthcare provider urgently if you notice:
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Rapidly increasing pain or swelling
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Multiple draining openings
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Fever or general illness
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Recurrent abscesses in the same area
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Difficulty moving the arm due to pain
Early treatment prevents complications and speeds healing.
Final Thoughts
Underarm abscesses are more than a cosmetic issue—they are a sign of infection that deserves proper medical attention. The image highlights how severe these lesions can become when they progress or recur. With early care, professional treatment, and preventive steps, most people can recover fully and avoid long-term skin damage.
