Not all the small creatures that live in the human body cause the disease, but some of them are harmful, and some are harmless, according to a report of a medical site.
Some types of creatures live either on the human body or within it, and vary in their effect, Web Medicine said. The most important of them:
Lice
They are tiny creatures, living in human hair and fed by scalp blood. In general, lice are not considered to be serious, but they cause itching, which is highly contagious and usually affects children in the primary stages.
Ringworm
Ringworm is a fungus that makes you get infected in different parts of your body. If the head is infected with the ring, it can cause hair loss in the form of rings, but in the feet, cause what is known as athlete's foot.
Hookworm
This worm can enter through the skin, especially if walking barefoot. The hookworm lives in the intestines, usually exiting the body on its own, so it is no longer serious.
Tapeworm
It is the most common and knowledgeable among people, injuring humans because of contaminated meat. The infected egg can be seen in the worm and its parts in its own waste.
Dweidiya
These parasites are tiny spiders, living on the surface of the face, and increase their presence with age.
Giardia
Are small parasites that live in the intestines and are transmitted to your body when swimming or drinking lake water or contaminated food or human infected.
