The cause is frequently unknown, but may be associated with allergic conditions, atopic eczema, or bacterial infection. Photophobia and oedema require referral, but the minor symptoms may be managed by pharmacists for not more than a week. Non-drug treatment includes cleaning the area and using warm moist compresses to remove scales. Normal saline washes or an astringent are simple remedies which may be of value. More severe cases may require prescribed topical corticosteroids.
Infections also require medical referral.