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.
Double vision can result from impairment in any part of the vision system, including the cornea, eye muscles, lens, nerves, or the brain. The most common cause of diplopia is misalignment of the two eyes that can arise from several different conditions. Some diseases such as myasthenia gravis and Graves' disease can cause weakness of the eye muscles, leading to misalignment of the eyes and double vision.