Leukopenia

Name(s): 
Leucopenia
Nature

Leukopenia (from Greek λευκός (leukos) 'white', and πενία (penia) 'deficiency') is a decrease in the number of leukocytes (WBC). Found in the blood, they are the white blood cells, and are the body's primary defense against an infection. Thus the condition of leukopenia places individuals at increased risk of infection.

Source: Wikipedia

Aggravates 
Type 
(G) Very specific problems