01OverviewDefinition, clinical context and the essential points that orientate the chapter.
Chalazia and hordeola are common causes of a localised eyelid lump, but they arise through different processes. A chalazion develops when a meibomian gland becomes obstructed and retained lipid provokes a granulomatous inflammatory response. It is often a smooth, firm nodule within the tarsal plate and becomes relatively painless as acute inflammation settles. A hordeolum is an acute bacterial infection. An external hordeolum involves a lash follicle and associated gland near the margin, while an internal hordeolum affects a meibomian gland deeper in the lid.
The distinction helps explain the expected course rather than supplying an infallible visual label. A developing chalazion may initially be red and sore, while a resolving internal hordeolum may leave a persistent chalazion. Ask how the lesion started, whether it has drained, how quickly it is changing and whether the same site has been affected before. Blepharitis and meibomian gland dysfunction promote recurrence. Rosacea and other chronic lid inflammation may also contribute, so examining the rest of the lid margins is more useful than repeatedly treating the single lump in isolation.
Most straightforward lesions can begin with conservative care. For a stye, NHS advice is a clean warm compress for five to ten minutes, two to four times daily. Water should be comfortably warm and never hot enough to burn delicate lid skin. For chalazion, Moorfields advises brief warm compresses followed by gentle massage towards the lash margin, downwards on the upper lid and upwards on the lower lid. Demonstrate the technique rather than simply writing 'lid hygiene'. Avoid forceful pressure, attempts to puncture the lesion and home removal of an eyelash.
A simple chalazion is primarily inflammatory, so an antibiotic prescription is not a substitute for supporting drainage or reconsidering an atypical diagnosis. Some hordeola or lesions with associated bacterial lid-surface infection may merit a topical antibiotic selected by a clinician. Spreading preseptal infection can require systemic treatment, and suspected orbital cellulitis needs emergency hospital management. The extent of disease, age, systemic state and eye examination determine that pathway; increasing antibiotic strength without reassessment is unsafe when vision or motility is abnormal.
Resolution is often gradual. An uncomplicated stye commonly improves over about a week, but a chalazion may take weeks or months to shrink. Persistent troublesome lesions can be assessed for incision and curettage or specialist intralesional steroid treatment. Decisions reflect discomfort, size, visual effects, diagnostic confidence and patient preference. Injection has procedure-specific risks, including skin depigmentation or atrophy, and surgery does not prevent a new gland blockage. A suspicious lesion needs a diagnostic plan, which may include histology, rather than repeated empirical drainage.
Recurrence must be interpreted carefully. Multiple chalazia at different sites in someone with clear meibomian dysfunction differ from an apparently recurrent solitary lesion at precisely the same site, particularly with lost lashes or altered lid architecture. Sebaceous carcinoma can imitate a chalazion or persistent unilateral lid inflammation. Most lid lumps are benign, but a previous benign label should not override new suspicious features. Refer through the appropriate urgent oculoplastic or suspected-cancer pathway when examination raises this concern.
Children merit attention to visual development and the feasibility of home care. A large upper-lid lesion can obstruct the pupil or alter corneal shape, causing blur even when the eye is not infected. Assess fixation or acuity and arrange appropriate eye review if visual effects are suspected. Persistent lesions do not automatically require surgery under general anaesthesia: the expected benefit must outweigh procedural burdens. Parents should know which worsening symptoms require earlier review rather than waiting through a long conservative treatment period.
Key points
- A chalazion is usually a firm, relatively painless inflammatory nodule from gland blockage.
- A hordeolum is an acute painful infection of a lid gland or lash follicle.
- An early inflamed chalazion can be tender, so pain alone is not a complete diagnostic rule.
- Use a clean comfortably warm compress and gentle lid care; avoid squeezing or self-lancing.
- Antibiotics do not routinely resolve an uncomplicated sterile chalazion.
- Same-site recurrence or missing lashes requires a fresh assessment of the diagnosis.
- Examine vision and eye movements when swelling raises concern about deeper infection.
02AetiologyUnderlying causes, associations and risk factors, with why each one matters.
Gland obstruction
A blocked meibomian duct retains lipid in the eyelid and produces a chalazion. Chronic lid-margin inflammation and altered gland secretions make further blockage more likely.
Acute bacterial infection
A hordeolum develops in an eyelash follicle or associated gland, or within a meibomian gland. The acute infectious process produces a tender local swelling that may form a pustule.
Inflammatory predisposition
Blepharitis, meibomian dysfunction and rosacea create an environment in which gland obstruction or infection recurs. Several lesions at different sites may reflect this underlying lid disease.
03PathophysiologyThe causal sequence from the underlying abnormality to symptoms and harm.
- 1Lipogranulomatous reaction
Lipid escaping from an obstructed gland provokes a local granulomatous response within the tarsal plate. The resulting firm nodule may outlast the redness and tenderness of its initial inflammatory stage.
- 2Local abscess formation
An infected gland accumulates inflammatory cells and purulent material. Its position determines whether the swelling points towards the lash margin or the deeper conjunctival surface.
- 3Mechanical visual effects
A sufficiently large lid mass can partly cover the pupil or deform the corneal surface. In a developing visual system, prolonged blur or asymmetrical input can affect visual maturation.
04Clinical features and red flagsSymptoms, examination findings, patterns of presentation and time-critical warnings.
A tender erythematous swelling at the lash line, sometimes with a visible pustule, supports an external hordeolum. The surrounding eye should retain normal visual function; extensive swelling requires assessment for a wider infection.
A rounded lump within the lid, often away from the lash margin and less tender over time, suggests chalazion. Lid eversion by a competent examiner can help localise the lesion when the diagnosis is uncertain.
Crusting, plugged gland openings, recurrent irritation and facial rosacea support an inflammatory lid environment. Addressing this background reduces repeated cycles of isolated treatment, although it does not make every new lump benign.
Look for focal lash loss, a persistent ulcer, irregular thickening, bleeding or distortion of the margin. Record the location and previous treatment of recurrent lesions so that apparent persistence is not mistaken for a new uncomplicated episode.
05InvestigationsWhat to request, why it matters and how to interpret it.
Read from the initial assessment onwards. Tests may run in parallel in urgent care; first-line, preferred, confirmatory, definitive and gold-standard labels appear only when the chapter explicitly states them.
- 01
Visual acuity and focused eye assessmentFirst step - Why
- Identify effects that are not expected from a small uncomplicated lid lesion.
- Interpretation and limitations
- Check acuity, pupils and eye movements when clinically indicated. Reduced vision, proptosis or painful motility should redirect assessment towards corneal or orbital disease rather than being attributed automatically to swelling.
- 02
Inspection of both eyelids and margins - Why
- Define the lesion and identify associated meibomian dysfunction or blepharitis.
- Interpretation and limitations
- Compare a superficial pustule with a deeper tarsal nodule and note tenderness, discharge, size and lash preservation. Bilateral background inflammation may explain recurrence but does not exclude a separate suspicious unilateral lesion.
- 03
Examination for spreading infection - Why
- Determine whether disease remains localised or extends into surrounding tissues.
- Interpretation and limitations
- Assess systemic observations, the distribution of erythema and the ability to examine the globe. A swollen lid that prevents an adequate examination, particularly in an unwell child, lowers the threshold for urgent secondary-care assessment.
- 04
Specialist biopsy when indicated - Why
- Resolve diagnostic uncertainty in an atypical or recurrent lesion.
- Interpretation and limitations
- Histology is considered when a lesion is suspicious or repeatedly recurs in the same place. Routine imaging and blood tests are unnecessary for a typical isolated chalazion, while biopsy decisions should precede destructive treatment of a concerning lesion.
06Differential diagnosisRealistic alternatives and the features that help distinguish them.
Sebaceous carcinoma
A sebaceous malignancy may resemble a recurrent chalazion or persistent unilateral lid inflammation. Focal lash loss, altered architecture and recurrence at one location increase concern about this alternative.
Other eyelid tumours
Benign cysts and papillomas can produce persistent lumps, while basal or squamous cell malignancy may cause ulceration, bleeding or distortion. Surface morphology and the evolution of the lesion help distinguish these possibilities.
Preseptal or orbital infection
Diffuse infection produces swelling extending beyond a discrete nodule. Orbital involvement can additionally impair eye movements or vision, distinguishing a deeper process from a simple focal lid lesion.
07ManagementImmediate care, first-line treatment, alternatives and escalation.
01Typical localised lesionStart practical conservative careFirst stepA focal chalazion or hordeolum has no visual or systemic warning features.+
- 1Explain the likely diagnosis and demonstrate safe warm compresses with gentle lid care.
- 2Avoid eye make-up and contact lenses while the acute lesion is active or draining.
- 3Agree reassessment for persistence and earlier review for spreading redness, increasing pain or visual change.
02Spreading or deeper infectionReassess extent before prescribingSwelling extends beyond the focal lesion or new concerning symptoms develop.+
- 1Assess vision, eye movements and systemic observations to identify possible orbital involvement.
- 2Arrange emergency hospital evaluation for orbital signs or serious illness, using age-appropriate local pathways.
- 3For confirmed preseptal disease, select antimicrobial treatment and follow-up through the appropriate clinical protocol.
03Persistent or atypical noduleReview diagnosis and referral needsThe lesion remains troublesome, affects vision or has suspicious recurrent features.+
- 1Confirm duration, previous treatment, exact site and the presence of lash or margin changes.
- 2Refer a suspicious lesion urgently for specialist assessment and a possible tissue diagnosis.
- 3Discuss routine procedural options for a confidently benign persistent lesion after reasonable conservative treatment.
08ComplicationsImportant consequences, why they occur and why they matter clinically.
Residual or recurrent nodule
An internal hordeolum may leave a chalazion, and underlying gland dysfunction can produce repeated episodes. Recurrence may occur despite successful resolution of an earlier individual lesion.
Spreading lid infection
Infection can extend through the surrounding eyelid tissues and cause preseptal cellulitis. The resulting diffuse swelling and discomfort may obscure the original focal source.
Visual disturbance
Large lesions can cause corneal distortion or obstruct the visual axis. Persistent asymmetric visual input is especially relevant in young children because it can contribute to amblyopia.
09Monitoring and follow-upTreatment response, safety checks and longer-term review.
- Ask whether the lump is shrinking, pain is improving and redness remains localised; new visual symptoms change the urgency of review.
- Review a stye that fails to improve over the expected course, and investigate persisting symptoms instead of issuing repeated prescriptions without examination.
- For a chalazion managed conservatively, document size and functional effect so that persistence can be assessed meaningfully at follow-up.
- In children, reassess visual behaviour and consider formal acuity or refraction when the lesion is large, prolonged or asymmetric.
- After a procedure, ensure that unexpected recurrence, ongoing bleeding or failure to heal prompts diagnostic reassessment.
10Special situationsVariants, exceptions and circumstances that change the usual approach.
Warm is sufficient
The purpose of a compress is gentle sustained warmth, not heat injury. A clean cloth may need rewarming, and carers should test its temperature before applying it to a child's closed eyelid.
Puncture is not home care
A clinician may occasionally facilitate drainage or remove an involved lash using suitable equipment. This does not justify advising the patient to squeeze, pierce or pluck the lesion themselves.
Avoid a steroid shortcut
Empirical steroid drops or injection can obscure alternative pathology and are not routine initial primary-care treatment for a lid lump. Specialist use depends on a secure diagnosis, procedure-specific risk assessment and follow-up.
Funding does not set urgency
Local eligibility rules for elective removal of a benign chalazion do not determine the management of suspected malignancy, significant visual effects or spreading infection. State the clinical reason for referral clearly.
Persistence is a clinical question
A residual firm nodule after an infection can be benign, but uncertainty should be resolved through re-examination. Duration alone should neither mandate a procedure nor justify indefinite reassurance when the morphology is changing.
11Common pitfallsFrequent interpretation and management errors.
- 01
Prescribing repeated antibiotics for a stable non-infected chalazion without addressing obstruction or reconsidering the diagnosis.
- 02
Calling every painful swelling a stye without checking acuity and ocular motility.
- 03
Missing same-site recurrence because previous notes did not record the lesion's precise position.
- 04
Telling a patient to squeeze or lance the lesion to accelerate drainage.
- 05
Applying an elective waiting period to a child with visual obstruction or a lesion with suspected malignant features.