45 yr male patient presented to the tertiary care hospital with h/o remittant fever with chills . He was diagnosed with malaria due to P.falciparum O/E there was pallor and clubbing of nails Investigation - CBC revealed : RBC count -1.72 million/ cc WBC count - 8200 cells / dl slightly elevated neutrophils count Hb% - 15.3 gm% What may be the reason for the clubbing ? Explain the pathophysiology