Is it normal for geographic tongue to feel itchy, irritated and dry when it starts up? my ears also itch inside and eczema. is this allergic reaction?

It's Episodic: The physical signs of geographic tongue tend to come & go over time. However, the condition never goes away completely. There can be extended periods when you don't really see or notice anything, but that doesn't mean it's gone. For the vast majority of people, there aren't any serious symptoms--the tongue just looks a bit weird. It's not an allergic reaction, but it can be itchy or sensitive.

Normal: Yes, it is very common for geographic tongue to feel itchy or even have a burning sensation. There has been some research into a connection between geographic tongue and other skin conditions, but no definitive proof. I would see a dermatologist for your skin condition. Geographic tongue is sometimes treated with topical anti-inflammatory agents.