Understanding the distinctions between these two conditions helps in choosing appropriate treatment and preventing recurrence.
Symptoms
Both chalazion and stye swellings can be red and inflamed, but key differences exist.
Styes often present with crusting along the eyelid margin, a gritty sensation as if a foreign body is in the eye, pain in the affected eyelid, a pimple-like appearance, burning or stinging, and light sensitivity. Stye swelling typically subsides after about 3 days, sometimes accompanied by tearing in the affected eye.
Chalazion swellings are generally firmer than styes, developing slowly over several months. Many resolve on their own within a few weeks. Beyond the firm lump, chalazion usually causes no symptoms. If symptoms occur, they may include blurred vision from a large swelling or widespread swelling around the eye.
Causes
Chalazion forms due to blockage of the Meibomian oil glands in the eyelid, which are responsible for keeping the eye moist. Risk factors include blepharitis, rosacea (a skin condition causing facial redness), seborrheic dermatitis (a type of eczema causing skin flaking), tuberculosis, viral infections, and chronic conditions such as diabetes and dyslipidemia.
Styes are typically caused by bacterial infection and come in two types. An external stye appears at the base of an eyelash, usually due to an eyelash follicle infection. An internal stye develops inside the eyelid, resulting from a Meibomian gland infection.
Blepharitis can cause styes. Occasionally, an initial stye may later transform into a chalazion.
Diagnosis
Both chalazion and stye are generally not dangerous, and not all cases require treatment. However, if they cause discomfort, an eye specialist should be consulted. A doctor can diagnose by examining the eyelid area, using a slit lamp for a closer look to differentiate between chalazion, stye, or other conditions (such as basal cell carcinoma).
Treatment
Styes are typically more painful and uncomfortable than chalazion, which often causes few or no symptoms. While treatment for these two conditions shares similarities, not all methods are suitable for both. Potential measures include:
Antibiotics are beneficial for styes caused by infection but are ineffective for chalazion.
Warm compresses can accelerate healing. Apply a clean, warm, moist cloth three to six times a day for 10-15 minutes each time, or use a warm eye mask.
Over-the-counter medications like stye ointments and eyewash solutions are helpful for styes but not effective for chalazion.
Steroid injections help reduce chalazion swelling.
Surgical drainage may be indicated by a doctor if the swelling affects vision. Do not attempt to squeeze or pop them at home to avoid spreading infection. If chalazion or styes recur frequently, a doctor might recommend a biopsy to rule out more serious conditions like sebaceous gland carcinoma.
Prevention
Individuals who have experienced chalazion or styes have a higher risk of recurrence. Prevention measures include avoiding rubbing eyes, washing hands thoroughly before touching eyes, not sharing washcloths, maintaining eyelid hygiene, replacing eye makeup every 6 months, not sharing cosmetics, promptly treating eyelid infections, and properly cleaning contact lenses.
Bao Bao (Source: Very Well Health)
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