The red bloody patches on the skin and ulcers are usually caused by bacteria.
(Ill. 59-62, 65-67, 68-71)
In some cases this bacterial infection occurs after a parasitic infection.
Another possible cause is viral infections.
An accurate diagnosis is necessary to determine the appropriate treatment.
Tip: We must not automatically assume that the red bloody patch or ulcer has been caused by a bacterial infection as the primary cause
may have been a parasitic infection.