An abscess in the underarm (axilla) is one of the most painful and uncomfortable skin problems a person can experience. The image shows a visibly inflamed and swollen lump under the arm with multiple pus-filled heads, darkened areas, and signs of severe infection. Such a condition requires immediate attention because it can rapidly worsen if ignored. This article explores what an underarm abscess is, why it occurs, common symptoms, and the most effective treatment options. It also provides essential information on when to seek medical help to prevent complications.
What Is an Underarm Abscess?
An underarm abscess is a pocket of pus that forms beneath the skin due to a bacterial infection. The warm, moist environment of the armpit makes it an ideal location for bacteria to multiply. When sweat glands or hair follicles become blocked or irritated, bacteria can invade and trigger inflammation, resulting in abscess formation.
Unlike small pimples or minor infections, an abscess is deeper, more painful, and often requires medical treatment to fully resolve.
What the Image Likely Suggests
Based on visible features, the skin shows:
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Severe swelling and redness
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Multiple pus heads, which may indicate several draining tracts
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Dark or necrotic-appearing areas, suggesting significant inflammation or dead tissue
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Greenish or discolored area, which may indicate deeper infection
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Tenderness and discomfort, as shown by the person’s expression
These are warning signs of a mature abscess or potentially a condition like hidradenitis suppurativa if infections occur repeatedly in the same area.
Common Causes of Underarm Abscesses
Several factors can trigger an abscess under the arm:
1. Ingrown Hairs
Improper shaving techniques, friction, or blocked follicles can allow bacteria to enter the skin.
2. Bacterial Infection
Staphylococcus aureus is the most common bacteria responsible for abscesses. In some cases, MRSA (methicillin-resistant Staph) may be involved.
3. Hidradenitis Suppurativa (HS)
A chronic skin condition causing recurrent painful lumps, tunnels, and drainage in the armpits, groin, and other sweat-prone areas.
4. Poor Hygiene or Excessive Sweating
Sweat trapped in the armpits encourages bacterial growth.
5. Blocked Sweat Glands
Clogged apocrine glands can become infected and filled with pus.
6. Weakened Immune System
Diabetes, low immunity, or chronic illness increases susceptibility to infections.
Symptoms of a Developing Underarm Abscess
An abscess typically progresses through stages. Common symptoms include:
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Painful, warm lump under the skin
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Visible redness and swelling
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Pus collection forming a soft or firm mass
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Tenderness that worsens when lifting the arm
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Fever or chills in severe cases
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Multiple head-like bumps, indicating connected tunnels of infection (sinus tracts)
If you notice black, green, or dark spots on the abscess, it may indicate skin necrosis or advanced infection.
Why Multiple Pus Heads Can Be Dangerous
The presence of several pus-filled points on the abscess suggests multi-loculated infection, meaning there are multiple pockets of pus interconnected below the skin. These are harder to drain at home and often require a medical professional.
It may indicate:
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A chronic condition like hidradenitis suppurativa
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Deep tissue infection
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Spread of bacteria into surrounding tissue
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Risk of abscess rupture
Ignoring these signs can lead to cellulitis, high fever, or even bloodstream infections.
How an Underarm Abscess Is Diagnosed
A clinician may:
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Examine the lump visually
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Gently palpate the area to assess depth
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Perform an ultrasound if needed
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Take a sample of pus for culture to determine the bacteria
Early diagnosis ensures faster and safer recovery.
Treatment Options for Underarm Abscesses
1. Warm Compresses
Applying warm, moist heat helps promote blood flow and encourages the abscess to come to a head. This is only effective in early stages.
2. Antibiotics
If bacteria are spreading or symptoms include fever, antibiotics may be prescribed.
3. Incision and Drainage (I&D)
This is the most effective treatment for large or severe abscesses.
A doctor will:
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Numb the area
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Make a small incision
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Drain the pus
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Clean the cavity
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Insert a wick or dressing if necessary
Never attempt to cut or squeeze an abscess at home, as this can worsen infection.
4. Treatment of Underlying Conditions
If hidradenitis suppurativa is suspected, long-term management is required.
This may include:
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Topical antibiotics
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Oral medications
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Lifestyle modifications
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Laser hair removal
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Surgical removal of affected tissue in severe cases
Prevention Tips
To reduce the risk of recurrent abscesses:
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Avoid shaving with dull razors
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Clean armpits regularly and thoroughly
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Wear loose, breathable clothing
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Avoid heavy antiperspirants that clog pores
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Maintain a healthy weight
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Reduce friction and sweating
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Seek treatment early for any suspicious lumps
When to Seek Immediate Medical Help
You should see a doctor right away if:
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The abscess is large, painful, or worsening
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There are multiple pus points
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You see black or green discoloration
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You have fever or feel unwell
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The abscess keeps coming back
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There is spreading redness around the lump
Delaying treatment can lead to serious complications.
Conclusion
An underarm abscess with multiple draining points is a sign of a severe skin infection that requires proper medical attention. While mild infections may respond to home care, advanced abscesses—especially those showing discoloration, intense swelling, and multiple pus heads—must be evaluated by a healthcare professional. Early treatment not only provides relief but also prevents long-term skin damage and recurrence.
If you notice any concerning symptoms similar to those described in this article, seeking prompt medical advice is the safest and most effective approach.
