Almost everyone finds a lump or bump on their skin at some point. Most turn out to be harmless, but that does not make them any less worrying when you first notice one. Some are simply a nuisance, catching on clothing or jewellery, while others are worth having checked properly. This guide covers the most common types, the warning signs that call for prompt medical advice, and what to expect if you decide to have a lump removed.
Common Types Of Skin Lumps
There are dozens of causes, but a handful account for most of what people ask doctors about:
- Lipomas: soft, rubbery lumps of fatty tissue that sit just under the skin and move slightly when pressed. They are usually painless and slow growing, and are often found on the back, shoulders, arms and thighs.
- Epidermoid (sebaceous) cysts: firm, round lumps that form when skin cells or oils become trapped beneath the surface. They often have a tiny dark opening at the centre and can become red, swollen or tender if inflamed or infected.
- Pilar cysts: similar in appearance, but they arise from hair follicles and are most common on the scalp.
- Skin tags: small, soft flaps of skin, typically on the neck, armpits, groin or eyelids. They are harmless but can be irritating.
- Benign moles: common pigmented spots. Most are harmless, though any change deserves attention (see below).
- Warts: rough growths caused by a viral infection of the skin, which often clear by themselves over time but can be stubborn.
Lumps that are not on the skin surface, for example in the groin or abdominal wall, can sometimes be a hernia, which needs a different kind of assessment.
Signs That A Lump Needs Prompt Attention
Most lumps are not serious, but see your GP without delay if a lump or mole:
- Grows quickly or changes noticeably over weeks or months
- Feels hard, fixed in place or irregular in shape
- Is painful, red, hot or leaking pus
- Bleeds, crusts or does not heal
- Is a mole that has changed in size, shape or colour, has an uneven border, or contains more than one colour
- Appears in the neck, armpit or groin alongside unexplained weight loss, night sweats or fever
If you have a lump that is new, persistent or just does not feel right, it is always reasonable to have it checked. An examination, and sometimes a scan, can usually tell a great deal about what a lump is.
How Lumps Are Assessed
Assessment normally begins with a conversation about how long the lump has been there, whether it has changed, and any other symptoms. The doctor will examine it, sometimes using a dermatoscope to look more closely at a mole. An ultrasound scan can help show whether a lump is solid or fluid-filled and how deep it goes, which is useful when planning removal. If there is any doubt about what a lump is, the removed tissue can be sent to a laboratory for examination under a microscope, known as histology.
Do All Lumps Need To Be Removed?
No. Many lipomas and cysts cause no problems and can safely be left alone once a doctor has confirmed what they are. People most often choose removal because a lump is uncomfortable, keeps becoming inflamed, is getting larger, is in a visible place, or because they want certainty about what it is.
What Minor Surgery Involves
Most straightforward skin lumps can be removed as day-case minor surgery under local anaesthetic, which means you stay awake but the area is numbed. The general steps are:
- The skin is cleaned and local anaesthetic is injected. You may feel a brief sting, and then pressure without pain.
- A small cut is made and the lump is carefully removed, ideally with its capsule or wall intact to reduce the chance of it coming back.
- The wound is closed with stitches, which either dissolve or are removed after around one to two weeks depending on the location.
- A dressing is applied and you are given aftercare instructions.
Many procedures take under an hour, and most people go home straight afterwards. Because the tissue can be sent for histology, you also get a definite answer about what the lump was.
Recovery And Scarring
Expect some tenderness, mild swelling or bruising for a few days, and simple painkillers such as paracetamol are usually enough. Keep the wound clean and dry, avoid strenuous activity that pulls on the area for the period your surgeon advises, and watch for signs of infection such as spreading redness, increasing pain, heat or discharge. If any of these develop, contact your clinic or GP.
Every cut leaves a scar, but a careful technique, a well-placed incision and good aftercare help it fade to a fine line. Where a lump is being removed from a visible area, discuss scar placement with your surgeon beforehand.
Choosing Where To Have It Done
If you are looking at options in Cardiff, Penarth or the Vale of Glamorgan, ask a few practical questions before booking:
- Is the procedure carried out by an appropriately qualified doctor, in a clinic regulated by Healthcare Inspectorate Wales?
- Will the lump be examined, and if necessary scanned, before the day of surgery?
- Is the removed tissue sent for histology?
- Does the quoted price include the consultation, procedure and any follow-up?
A consultant-led service offering lump removal will normally assess the lump first, explain whether surgery is appropriate and talk you through the risks, which include bleeding, infection, scarring and, occasionally, recurrence.
The Bottom Line
Most lumps and bumps are harmless, but the only way to be sure is to have them assessed, particularly if they are changing, painful or simply worrying you. If a lump is causing problems, minor surgery under local anaesthetic is quick, well tolerated and gives you both relief and an answer.
This article is for general information only and is not a substitute for personal medical advice. If you notice a new or changing lump, speak to a qualified healthcare professional.
