Ambulance 912HAP 9252
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Skin cysts (epidermoid and pilar cysts)

A so-called sebaceous cyst is usually an epidermoid or pilar cyst: a benign sac under the skin containing keratin. Have an unexplained or changing lump assessed; redness and pain can result from rupture or infection, and squeezing increases the risk of inflammation.

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A so-called sebaceous cyst is usually an epidermoid or pilar cyst: a benign sac under the skin containing keratin. Have an unexplained or changing lump assessed; redness and pain can result from rupture or infection, and squeezing increases the risk of inflammation.

  • A slowly growing round or oval lump just under the skin.
  • A smooth surface and sometimes a visible dark dot or pore in the centre.
  • Do not squeeze, puncture or cut the cyst open yourself.
  • Keep an area that has opened on its own clean and cover any leakage with a clean dressing.
  • Make an appointment for any unexplained lump or if you are unsure whether it really is a cyst.
  • For urgent GP care outside normal opening hours, call HAP 9252. Call Ambulance 912 only for an immediately life-threatening situation.

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