Pathogenesis (development of disease)
Lymphangitis is usually caused by infectious agents washing into the lymphatic system or by the spread of a nearby tissue infection to the lymphatic system.It usually involves infected wounds.
Pathogens are often streptococci or staphylococci.In the tropics, filariasis (nematode infestation) is common.
Etiology (causes)
Disease-related causes.
Injuries, poisonings, and other sequelae of external causes (S00-T98).
- Infected wounds, often on the extremities.
- Poisoning, for example, by snake venom.
Drugs
- Chemotherapeutic agents – in case of accidental extravascular (outside the blood vessel) injection.