What causes the lower eyelid to be bloodshot?

A bloodshot lower eyelid can be caused by several factors, including irritation or inflammation from allergens, environmental factors, or infections like conjunctivitis. Additionally, conditions such as blepharitis or eyelid dermatitis can contribute to redness. Trauma or injury to the eyelid can also result in increased blood flow and a bloodshot appearance. If the redness persists, it’s advisable to consult a healthcare professional for proper diagnosis and treatment.