Keloid scar from a bug bite: what to know

After the bite settles, a keloid may remain raised, smooth, shiny, darker or lighter than nearby skin, and tender when rubbed. It forms when healing tissue keeps producing more collagen than the wound needs. This is different from a temporary itchy bite bump, which generally follows the bite itself and does not keep spreading beyond it.

A keloid is a skin scar, not an infection caused by the insect. It can occur on the chest, shoulders, ears, neck, or anywhere a small injury has healed. A clinician may examine its borders and texture before recommending treatment.

Avoid scratching, picking, piercing, or trying to cut the raised area at home. Protect it from friction and use sunscreen on exposed skin once the bite has healed. Arrange a dermatology assessment if the mark is growing, itchy, painful, or affecting movement.

Treatment depends on its size, age, colour, symptoms, and location. Options may include Steroid Injection Into The Skin, Cryotherapy (Lesion Removal), Pulsed Dye Laser Treatment, or Keloid Removal Surgery. Removing a keloid alone can be followed by another raised scar, so prevention of regrowth is part of the discussion.

Seek prompt medical care if the area becomes rapidly red, hot, increasingly swollen, drains pus, or you develop fever, because those changes can suggest infection rather than settled scar tissue. Seek urgent help for facial swelling, breathing trouble, or widespread hives after a bite.

Ask whether the lump matches a keloid, whether treatment should start before it grows further, and how recurrence prevention would fit the plan. You can also ask how to distinguish a new bite reaction from a change in the scar.