In simple words: Allergic dermatitis of the right upper eyelid means the skin of your right upper eyelid is inflamed, causing redness, swelling, dryness, and itching. This is an allergic reaction to something you've come in contact with like pollen, dust mites, or certain cosmetics.

Allergic dermatitis, also known as contact dermatitis, of the right upper eyelid occurs due to an inflammatory reaction to allergens such as pollens, dust, or cosmetic products, or other irritants. Patients with this condition experience irritation, swelling, dryness, and redness that can affect the eyelid within a few hours or days of contact with an allergic substance. If the condition persists, eyelids can become thickened (lichenified).

Example 1: A 25-year-old female presents with redness, itching, and swelling of her right upper eyelid after using a new brand of mascara., A 50-year-old male with a history of seasonal allergies experiences recurring inflammation and irritation of his right upper eyelid during the spring., A child presents with swollen, itchy eyelids after playing in a field of tall grass. Only the right upper eyelid demonstrates inflammation.

Documentation should include the type of dermatitis, location (right upper eyelid), laterality, the suspected allergen, and the severity of the reaction.