It attacks connective tissue

Scleroderma

Porcine Stress Syndrome
PSS is an acronym meaning: progressive systemic sclerosis

Alfred John Barnett has written:

'Scleroderma (progressive systemic sclerosis)' -- subject(s): Systemic scleroderma

Systemic scleroderma, which is also called systemic sclerosis, affects the smaller blood vessels and internal organs of the body. Systemic sclerosis-- A rare disorder that causes thickening and scarring of multiple organ systems