Review of Symptoms, Part VIIWhat Lies Beneath Lid SwellingA variety of conditions ranging from mild to life-threatening can result in swollen eyelids. Here’s how you can determine what’s causing your patient’s problem.Sidebar: Differential Diagnosis: Preseptal vs. Orbital CellulitisJoseph W. Sowka, O.D. Alan G. Kabat, O.D. Contributing Editors Lid swelling is perhaps one of the most disconcerting conditions we encounter in clinical practice, especially when the swelling is so severe that the patient cannot open the affected eye. The swelling may be from something as mild as a chalazion or seasonal allergy, or it may pinpoint a life-threatening problem such as orbital cellulitis. Oftentimes, the patient’s appearance and presenting signs and symptoms will guide your diagnosis. In this seventh installment of our series “Review of Symptoms,” we review those disorders that present with focal or diffuse lid swelling. Infections
You must differentiate preseptal cellulitis from the more severe orbital cellulitis. The latter may cause significant morbidity and even mortality. Both conditions present with an acutely painful, swollen lid, but many distinguishing features help to differentiate them (see “Differential Diagnosis: Preseptal vs. Orbital Cellulitis,” below). Orbital cellulitis involves a bacterial infection of the lid tissues both anterior and posterior to the septum orbitale. This condition may result from a sinus infection or dental abscess. The infection can spread through a valveless venous system, leading to cavernous sinus thrombosis, meningitis, intracranial infection and septicemia. (Cavernous sinus thrombosis itself may contribute to eyelid edema, usually bilaterally. Proptosis and chemosis usually characterize this.)
Patients with dacryocystitis report significant pain, especially upon palpation, and often manifest a fever. Mucopurulent discharge may be evident in the cul-de-sac; you can express this through the punctum by digitally applying pressure to the lacrimal sac. Keep manipulation to a minimum to avoid disseminating the infection. Dilation and irrigation of the canaliculi is absolutely contraindicated. Dacryoadenitis is an inflammation of the primary lacrimal gland. Acute dacryoadenitis is typically infectious in nature, and presents unilaterally with pain, ocular redness, tearing and swelling of the upper lid. This condition presents with inflammation of the outer one-third of the upper eyelid in a characteristic but peculiar S-shaped swelling. This type of swelling typically involves only the palpebral lobe of the lacrimal gland. If the orbital lobe is also affected, you may observe inferonasal globe displacement, proptosis and impairment of ocular motility. Other signs of dacryoadenitis include preauricular lymphadenopathy, fever, conjunctival chemosis and an elevated white blood cell count. Children and young adults are the most common age group to be affected. Acute ocular allergy is another common condition that can result in lid swelling. Chronic, seasonal allergies can lead to mild swelling of the lids, but severe edema is usually the hallmark of an acute hypersensitivity reaction. This usually stems from one of two forms of toxic reaction:
Intense itching, both on the epidermal surface of the eyelid and within the conjunctival tissues, is the hallmark symptom of all allergic ocular conditions. Other associated findings may include burning, tearing and redness of the bulbar conjunctiva. In a true toxic reaction there will not be a preauricular lymphadenopathy. All forms of toxic lid reactions are self-limiting, but respond well to cold compresses, antihistamines (both topical and oral) and topical corticosteroids.
Unlike hordeola or other lid infections, chalazia have no associated pain or tenderness. Patients usually only report a mild awareness of the lesion, and often seek treatment because they don’t like the appearance.
Thyroid eye disease, or Graves’ disease, occurs in up to 80% of patients with systemic hyperthyroidism, but may also occur in some patients with normal thyroid function. Periorbital edema, which results in lid swelling, is one of the earliest signs of thyroid eye disease. Other associated findings include conjunctival edema and infiltration of the lacrimal gland, both of which contribute to this swelling. As the condition progresses and infiltrates the extraocular muscles and orbital tissue, proptosis and a characteristic “stare” result. This is typically bilateral, but asymmetric presentations also may occur. Infiltration of the orbit and/or lacrimal gland with subsequent swelling of the lids may also occur in neoplastic disorders, most notably leukemia, lymphoma and metastatic disease.
Keep in mind that some non-inflammatory conditions, specifically angioedema and cardiac or renal disease, may also cause lid swelling. Also, elderly patients may have a benign prolapse of orbital fat. Trauma is obviously a significant factor in many cases of lid swelling. Blunt ocular injury often results in both edema and ecchymosis (trapped blood) within the lids. The supraorbital ridge limits most traumatic lid swelling superiorly, and the malar and nasojugal folds do the same inferiorly. However, blood and other fluids can extravasate across the loose skin in the ethmoid region, resulting in swelling and ecchymosis of the contralateral eyelid in some instances. The history is the definitive finding in most cases of traumatic lid swelling. However, clinical entities such as orbital fracture may present with severe lid swelling days later, and present a diagnostic challenge. Blow-out fractures of the ethmoid wall can create a communication between the sinus and the orbit. Patients who vigorously blow their nose may force air into the orbit (orbital emphysema) and present with actual inflation of the eyelids on the involved side. You can diagnose this by palpating the lids for crepitus; gentle but firm manipulation of the tissue results in a “popping” or “crackling” sound as trapped air escapes. All cases of blunt ocular trauma warrant imaging. Computed tomography (CT) scanning is the preferred modality because it reveals bony defects. (For a more complete discussion, see the 2-part Optometric Study Center series, “Adding Insight to Injury,” March 2000, and “How to Manage Fractures and Penetrations,” April 2000.) Eyelid swelling is often disconcerting for patients, and may have a vast number of etiologic factors. A probing history and evaluation, and careful consideration of the associated signs and symptoms will allow you to properly diagnose and manage these patients. Drs. Sowka and Kabat are on the faculty at Nova Southeastern University College of Optometry, Fort Lauderdale, Fla. |
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