Commonest infestation by Sarcoptes scabiei mite
Intensely itchy popular rash
The sides and webs of the fingers, wrists, axillae, areolae, and genitalia are among the common sites of involvement. (Classic)
Crusted scabies or Norwegian scabies affects people with poor cell mediated immunity. It is associated with a heavy mite burden. Forms crusts and fissures.
Can get secondary infection.
Transmitted through contact
Causes severe itch which is usually worse at night