Also known as walking dandruff, cheyletiellosis is a highly contagious skin disease caused by the Cheyletiellosis mite. Cats are most commonly infected with Cheyletiella blakei. Young cats are more often infected although cats of any age can have these mites.
The mites live out their entire life cycle (approximately 30 days) on the cat, living on the skin surface keratin. They occasionally burrow their head pincers (known as chelicerae) into the skin and feed on tissue fluids.
Transmission occurs via direct contact with an infected animal. Adult mites can survive for up to 2 days off the host, so it is possible for your cat to become infected via the environment.
Itching (although not all cats exhibit this symptom)