Conversation: The conversation between human and AI assistant.
[|Human|] My 3 year old son has a lot of food allergies and takes zyrtec for them. My concern is the purple rings under his eyes and today he had a nose bleed from one nostril for no apparent reason (he also has had a swollen gland in his neck for 2and half years). Are these common symptoms for allergies?
[|AI|]  All of these symptoms are related to allergy the circles around his eyes are due to allergic rhinosinusitis .the nose bleeding is due to weakening of the mucous membranes of the nose due to constant irritation by the allergen the swollen gland in his neck is mostly an enlarged lymph nodes due to recurrent inflammation of the upper air ways due to allergic reactions. I suggest to at least do a complete blood count and a blood film to make sure of the diagnosis of the neck mass and to exclude low platelets which can cause a nose bleeds.