Allergies can cause many ear, nose, and throat symptoms in children, but allergies can be difficult to separate from other causes. Here are some clues that allergies may be affecting your child. Children with nasal allergies often have a history of other allergic tendencies (or atopy).
Is the diplopia constant or intermittent? Causes of intermittent diplopia include thyroid disease, myasthenia gravis, multiple sclerosis, and exo/eso breakdown. Causes of constant diplopia include cranial nerve palsy, thyroid or myasthenia gravis cases, and post-surgical cases. The most frequent surgical case that can result in diplopia is cataract surgery.
Sometimes, there is an inability to converge the eyes at all, which can result in diplopia (double vision). With convergence insufficiency, headaches, dizziness, and/or nausea can result when doing near work for awhile. This can lead to an inability to concentrate and even irritability. This condition is caused by a muscle imbalance, where the lateral rectus muscles exert more tension on the eyes than the medial rectus muscles do. Often, this can be treated with visual therapy and/or base-in prismatic power in lenses.