Hx
May be the presenting manifestation of AIDS.
PE
Widely disseminated papules and plaques
Increased numbers on the trunk and arms
Mucosal
Source: Academic Life in Emergency Medicine  
Hx
Not a common cause of CA-PNA
Generally occurs in the elderly, smokers, alcoholics, and those with other co-morbidities
Sx
Can cause severe pneumonia, especially in the elderly or debilitate