About this condition
“Atheroma” is a term often used for a rounded skin cyst or subcutaneous lump. In children the precise type matters, because a cyst, lipoma or inflamed lesion may look very similar on the surface.
What matters most
A slow-growing, circumscribed lump may remain painless. The term alone is not a tissue diagnosis, and it should not be taken as proof of a particular cyst type. Location, clinical course and skin changes help guide assessment.
Symptoms and reasons to seek care
A small bump beneath the skin may gradually change in size. When inflamed it may become hot, tender and red, and discharge may appear. A rapidly spreading inflamed patch or fever deserves prompt attention.
How it differs from similar conditions
Atheroma and epidermoid cyst are sometimes used interchangeably in everyday speech, but not all subcutaneous lumps are cysts. Lipomas and local infections differ in management; examination is needed before any decision to drain or remove a mass.
Assessment and diagnosis
A surgeon or other relevant clinician evaluates mobility, depth, consistency, skin and signs of inflammation. Imaging or histology may be selected when findings are atypical or a lesion has been removed. A diagnosis should not be made from a phone picture alone.
Monitoring and treatment
A stable small lump may be observed after assessment. Recurrent inflammation, growth or discomfort can prompt discussion of treatment or removal, depending on diagnosis and the child’s circumstances. Do not squeeze, warm aggressively or puncture a painful lesion; specific procedures must be confirmed separately with the clinic.
When emergency help is needed
An enlarging very painful lump, fever, rapidly spreading redness or a child who appears markedly ill may indicate an abscess or another urgent infection. Seek prompt examination and use emergency services 103 or 112 for severe deterioration.
Related information
Epidermoid cyst in a child; Lipoma beneath the skin; Skin moles and naevi.
Signs and symptoms
A small bump beneath the skin may gradually change in size. When inflamed it may become hot, tender and red, and discharge may appear. A rapidly spreading inflamed patch or fever deserves prompt attention.
Diagnosis and tests
A surgeon or other relevant clinician evaluates mobility, depth, consistency, skin and signs of inflammation. Imaging or histology may be selected when findings are atypical or a lesion has been removed. A diagnosis should not be made from a phone picture alone.
Care and treatment approaches
A stable small lump may be observed after assessment. Recurrent inflammation, growth or discomfort can prompt discussion of treatment or removal, depending on diagnosis and the child’s circumstances. Do not squeeze, warm aggressively or puncture a painful lesion; specific procedures must be confirmed separately with the clinic.
When to seek urgent care
An enlarging very painful lump, fever, rapidly spreading redness or a child who appears markedly ill may indicate an abscess or another urgent infection. Seek prompt examination and use emergency services 103 or 112 for severe deterioration.
Frequently asked questions
Is an atheroma always harmless?
Most cyst-like lumps are benign, but the term cannot replace an assessment of growth, inflammation or other warning signs.
Can a warm compress replace examination?
No. Self-treatment may delay care, especially if redness, pain or swelling is worsening.
When might removal be discussed?
Persistent symptoms, repeated inflammation, growth or diagnostic uncertainty may lead a clinician to recommend treatment.
Information sources
Medical source links used when preparing this article.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
