Your symptoms of persistent ear itching, a dry cough, and an itchy throat are closely linked, often due to shared nerve pathways. When the throat is irritated or affected by allergies, it can cause a referred itch in the ears, which is why ear drops haven't worked. This is a very common issue and not a cause for concern. To find relief, you can try an over-the-counter oral antihistamine, such as cetirizine or loratadine, and use warm saline gargles. Please avoid putting cotton swabs in your ears. I highly recommend visiting an ENT specialist for a proper evaluation to target the exact cause.