<unk>  must be differentiated from blepharitis, keratitis, and scleritis.<unk>  symptoms and signs are relatively non-specific. Even after eye examination, laboratory tests are often necessary to determine the underlying pathophysiology with certainty.
Conjunctivitis differential diagnosis
Impetigo differential diagnosis
Blepharitis differential diagnosis
Rhinitis differential diagnosis
Atopic dermatitis differential diagnosis
Byssinosis differential diagnosis
Vertigo differential diagnosis
Acne vulgaris differential diagnosis