The diagnosis of scabies is often made based on symptoms and physical examination. The doctor may:

Scrape off a small skin sample and examine it under a microscope for mites, eggs, or mite faeces.
Use an ink test to highlight burrows where mites have entered your skin.
Conduct a skin biopsy if other methods are inconclusive.

Persistent and severe itching
Secondary skin infections
Impetigo, a bacterial skin infection
Scabies nodules

Scabies is a sign of poor hygiene: Scabies can affect anyone, regardless of cleanliness.
Scabies can be spread by pets: Human scabies mites cannot thrive on pets.

Dermatitis
Psoriasis
Impetigo
Other insect bites or infestations