Here are some possible reasons why your ears may itch:

Earwax buildup: When earwax accumulates and hardens in the ear canal, it can cause itching, discomfort, and even temporary hearing loss. Earwax buildup is the most common cause of itchy ears.

Dry skin: The skin inside your ears may become dry and flaky due to a lack of moisture, leading to itching.  This may be caused by over cleaning your ears.

Allergies: Allergic reactions to certain substances such as pollen, dust mites, or pet dander can cause an itchy sensation in the ears.

Skin conditions: Certain skin conditions like eczema or psoriasis can also affect the skin inside your ears and cause itching.

Infections: Bacterial or fungal infections in the ear canal or middle ear can cause inflammation, pain, and itching.

Insect bites: Mosquitoes or other insects that enter your ear canal can leave behind bites that cause itching.

Foreign objects: Sometimes foreign objects like cotton swabs or hairpins can get lodged inside the ear canal and cause irritation and itching.

If you experience persistent or severe itching in your ears, it's best to consult a healthcare professional for proper diagnosis and treatment.