Some medications taken by mouth can cause an allergic reaction first seen around the eyes, with swelling and redness of the lids and skin around the eyes. This tends to be seasonal, and large lumps develop under the eyelids and can create severe symptoms of itching, lid swelling and droopiness, and discharge. In this complication, a hypersensitivity reaction, or allergic reaction develops on the cornea or conjunctiva. Symptoms include ocular redness, itching, burning, tearing, and the sensation that something is in the eye, especially with blinking. Sometimes a white spot can be seen near the edge of the cornea.
Treatment is aimed at treating the underlying blepharitis, and at helping the cornea to heal.
This condition is very responsive to steroid eye medication. Preventive measures include cleaning of the eyelid in order to prevent the hypersensitivity reaction. Contact lens problems - contact lens use can cause itching and irritation, due to allergy or improperly fitting lenses. Episcleritis - localized eye injection with mild symptoms. Medication toxicity - ocular irritation related to eyedrop usage.