H15.1

Clinical Causes: The exact cause of episcleritis is often unknown, but it is sometimes linked to autoimmune conditions such as rheumatoid arthritis or lupus. Infections, including viral or bacterial conjunctivitis, can sometimes trigger episcleritis. Environmental factors, like exposure to wind or sunlight, may contribute to irritation and inflammation. It can also occur as a recurrence in people who have experienced episcleritis previously. In some cases, episcleritis is associated with systemic inflammatory diseases, although many instances are idiopathic (without a known cause).

Key Symptoms: Localized redness in one or both eyes, often appearing as a sector or patch. Sensation of mild discomfort, soreness, or a gritty feeling in the affected eye. Occasional tearing or watery eyes. Sensitivity to light (photophobia), especially if the inflammation is prominent. The reddish area may appear elevated or swollen but generally does not cause significant pain or vision changes. Symptoms tend to be temporary, lasting days to a few weeks, and may recur over time.

Diagnosis Path: Diagnosis of episcleritis involves a detailed eye examination by an eye care professional. The clinician will observe the eye's redness, check for the involvement of the episclera versus deeper eye layers, and may perform simple tests such as applying topical phenylephrine drops. These drops constrict the blood vessels in the superficial layers of the eye and can distinguish episcleritis from conjunctivitis or scleritis. Additional assessments may be conducted to rule out underlying systemic conditions, especially if episodes recur frequently or are associated with other symptoms.

Treatment Protocols: Episcleritis often resolves without treatment, but managing symptoms and reducing discomfort is common. Treatment options include: - **Artificial tears and lubricating eye drops** to soothe irritation. - **Topical corticosteroids** may be prescribed for more persistent or uncomfortable cases to decrease inflammation. - **Non-steroidal anti-inflammatory drugs (NSAIDs)** in the form of eye drops might also be recommended. - **Addressing underlying causes** if identified, such as managing autoimmune disorders or infections. - **Patient education** on avoiding environmental irritants like wind or bright sunlight to reduce recurrence risk. Most episodes are self-limiting, lasting from a few days to a few weeks, and do not lead to lasting eye damage. If symptoms worsen or do not improve, or if there are signs of more serious eye conditions, prompt consultation with an eye specialist is advised.