Eyelid dermatitis usually requires treatment for about half a month to a month. Eyelid dermatitis can be caused by a variety of reasons, such as herpetic eyelid dermatitis caused by viral infections, allergic eyelid dermatitis caused by allergies, and neurodermatitis, etc. Regardless of the cause of eyelid dermatitis, regular treatments are needed to cure it, and the treatment period is relatively long, usually about half a month to a month. Virus-induced herpes blepharodermatitis is mainly treated with antiviral eye ointment, commonly used ganciclovir eye ointment, etc. Allergic blepharodermatitis caused by allergic factors can be treated with antiallergic medications, such as tobramycin dexamethasone ophthalmic ointment, etc. Neurogenic dermatitis requires avoiding excessive mental stress and avoiding scratching and irritation of the skin, and it can usually get better gradually on its own. If you have symptoms of eye discomfort, you should go to the ophthalmology department of the hospital in a timely manner, consult an ophthalmologist for guidance and treatment, and do not blindly use medication on your own.