Brief Answer: The cause can be allergy or inflammation. Detailed Answer: Hello Welcome to Health care magic Iam Dr. Dadapeer K, an ophthalmologist and I answer health problems related to eye. It seems from the history that you are having periorbital edema probably caused by allergies and you have used claritan zpack. Claritan is loratadine and it is an antiallergic drug and as you have mentioned that all symptoms are decreased except for periorbital edema. Periorbital edema is commonly seen in allergies or inflammations of the eyelids and other adnexal structures of the eye. In allergic conditions there is itching and absence of pain, tenderness and other inflammatory symptoms. Th treatment is by use of anti-allergic drugs as you have done. The inflammatory conditions require treatment by the use of antibiotics and anti-inflammatory drugs. Since you do not seem to be having inflammatory symptoms the underlying cause is most probably allergic and treatment is by use of anti-allergic drugs. As you have already taken anti-allergic drugs you can continue them for another few days as allergic conditions usually require treatment for long time and application of cold compression may provide symptomatic relief. If the symptoms won't come down some systemic problems like hypoproteneimia, anemia.. need to be ruled out. These conditions usually result in early morning puffiness of the eyelids because of collection of fluid in the eye lids. Hence I advice you to continue anti-allergic drugs and do cold compression as of now. If the symptoms does not get relieved you require examination by physician to rule out systemic causes. Hope I have answered your question and the information is helpful to you. Thank you

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Brief Answer: It may last for 3-4 weeks Detailed Answer: Hello Thank you for the follow up Allergy conditions tend to run a chronic course and most of them lasts for 3-4 weeks. Along with medical treatment allergens if you can identify any, like dust, cosmetics.... should be avoided. Thank you

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