Itchy eyes that swell when rubbed—what could be the cause?

Generally, itchy eyes that become swollen after rubbing may be caused by foreign bodies in the eye, dry eye syndrome, contact dermatitis, allergic conjunctivitis, or blepharitis. Appropriate management can be selected based on the specific cause. The details are as follows:

1. Foreign body in the eye

If there are foreign objects such as eyelashes or small hair fragments in the eye, irritation from these objects may easily lead to swelling after rubbing. Prompt removal of the foreign body and rinsing the eye with clean water or saline solution can help alleviate symptoms.

2. Dry eye syndrome

Dry eye syndrome, often caused by prolonged exposure to wind, sun, or eye strain, typically results in eye fatigue, redness, and swelling. Treatment may include using sodium hyaluronate eye drops or polyvinyl alcohol eye drops as directed by a physician.

3. Contact dermatitis

Patients with contact dermatitis may experience itching, pain, and discomfort in the affected skin area, which could also lead to the aforementioned symptoms. Local treatment with mupirocin ointment or fusidic acid cream may be used as prescribed by a doctor.

4. Allergic conjunctivitis

Allergic conjunctivitis commonly causes symptoms such as itchy and red eyes, which may result in eye itching that worsens and leads to swelling upon rubbing. Treatment may include polyvinyl alcohol eye drops or antazoline hydrochloride eye drops as directed by a healthcare provider.

5. Blepharitis

Blepharitis refers to a chronic inflammatory condition affecting the eyelid margins, which is generally difficult to cure completely. Common symptoms include red, itchy eyes, a burning sensation, along with eyelid margin redness and swelling. This explains why some patients experience unexplained eye itching followed by eyelid swelling after rubbing. Patients may use tobramycin-dexamethasone eye drops or levofloxacin hydrochloride eye drops under a doctor's guidance.

In summary, if any of the above symptoms occur, patients are advised to seek timely medical evaluation at a reputable hospital and receive appropriate treatment based on their specific condition.