Excessive scratching or itching
Frequent head shaking
Rubbing ears or body against furniture or the floor
Hair loss, especially in patches
Red, irritated, or inflamed skin
Scabs, crusts, or flaky skin
Dark, waxy, or crumbly ear discharge
Strong odor from the ears or skin
Visible tiny moving specks on the skin or in the coat
Thickened or scaly skin
Restlessness or discomfort
Chewing or licking paws, ears, or affected areas
Ear sensitivity or pain when touched
Skin lesions or sores from scratching
Signs of secondary skin infection
Changes in behavior due to discomfort