A 22-year-old woman presents to an urgent care center reporting acute onset of pain and localized swelling in her left upper eyelid for the past 24 hours. She denies any recent trauma, foreign body sensation, or changes in vision, though she notes mild discomfort with blinking. On examination, a tender, erythematous, well-demarcated nodule measuring approximately 4 mm is observed at the margin of her left upper eyelid, adjacent to an eyelash follicle. There is no diffuse periorbital edema, proptosis, or restriction of extraocular movements. Conjunctiva appears clear without injection or purulent discharge. Visual acuity is preserved at 20/20 in both eyes. Considering the clinical presentation, what is the most likely diagnosis and the immediate recommended course of action?

A 28-year-old woman arrives at a general outpatient clinic complaining of a persistent, tender lump on her right upper eyelid for the past three days. She describes the area as feeling increasingly sore and swollen, with mild discomfort when blinking. She reports no significant changes in her vision, no double vision, or pain with ocular movement. She has a history of occasional contact lens use, though she has avoided wearing them since the onset of symptoms. She denies any preceding trauma, fever, or chills. On physical examination, her vital signs are stable: temperature 37.10C, blood pressure 118/75 mmHg, pulse 70/min, respirations 14/min, and oxygen saturation 98% on room air. Inspection of the affected eyelid reveals a localized, erythematous, and tender nodule near the lid margin, with mild associated swelling. The surrounding skin appears normal, and there is no proptosis or restriction of extraocular movements. The conjunctiva is mildly hyperemic adjacent to the lesion. Given these findings, what is the most likely diagnosis and the most appropriate initial management approach?

A 30-year-old woman attends a general practice clinic complaining of a tender, red swelling on her right upper eyelid that developed rapidly over the past 12 hours. She reports localized discomfort but denies any changes in visual acuity, double vision, or pain with eye movement. She also states she has no fever, chills, or headache. Her medical history is unremarkable. On examination, vital signs are stable: temperature 36.8°C, heart rate 72 bpm, blood pressure 120/78 mmHg, respiratory rate 16 breaths/min. Inspection of the eyelid reveals a well-demarcated, erythematous, tender nodule situated at the lid margin, with a small visible pustule. Palpation elicits tenderness. The remainder of the ophthalmic exam, including extraocular movements and pupillary light reflexes, is normal. Conjunctivae are mildly injected but without discharge. Considering these findings, what is the most likely diagnosis and the most appropriate immediate intervention?