Large, painful lumps on the back are more than just ordinary pimples. In some cases, they develop into infected abscesses—deep pockets of pus caused by bacteria. Left untreated, these infections can grow rapidly, causing severe pain, swelling, fever, and even life-threatening complications.
The image above appears to show a very large inflamed skin abscess or infected cyst with significant swelling and visible pus. While it’s not possible to diagnose a medical condition from an image alone, this type of lesion requires prompt evaluation by a healthcare professional.
What Is a Skin Abscess?
A skin abscess is a localized infection where bacteria invade tissue, leading to a collection of pus beneath the skin. The body surrounds the infection to prevent it from spreading, creating a swollen, painful lump.
As pressure builds inside the abscess, the skin becomes:
- Bright red or purple
- Warm to the touch
- Extremely painful
- Tight and shiny
- Filled with thick yellow or white pus
Large abscesses often require professional drainage because antibiotics alone usually cannot remove the trapped infection.