Uncariasis dermatitis

Introduction Hook dermatitis is a disease caused by the hookworm parasitic human small intestine, mainly characterized by iron deficiency anemia, intestinal dysfunction, malnutrition, severe heart failure and developmental disorders. Light-weight patients can be asymptomatic, and only the sputum eggs are found in the feces.

Cause

Skin damage within a few minutes to 1 hour after the filamentous mites invade the skin, local skin congestion, edema, neutral and eosinophil infiltration, red papules may appear, become blister within 1 to 2 days. Within 24 hours after infection, most of the larvae remained in the dermis and subcutaneous tissue, and then reached the lungs via lymphatic vessels or microvessels.

an examination

Related inspection

Skin fungus microscopic skin test

Laboratory inspection:

1. The blood is characterized by low hemoglobin small cell anemia, the total number of red blood cells is reduced, the shape and size of red blood cells are different, the coloration is shallow, the central colorless transparent area is enlarged, and a small number of red blood cells and polychromatic or basophilic points can be found. Color cells. Both hemoglobin and mean hemoglobin concentrations decreased earlier. The total number of white blood cells and eosinophils increased at the beginning of the disease, and later decreased due to severe anemia. The extracellular iron in the bone marrow disappears, the percentage of iron red blood cells is mostly low, the serum iron concentration is significantly reduced, generally below 9 mol/L, the total iron binding capacity of plasma is increased, the free protoporphyrin in red blood cells is increased, and iron deficiency anemia is manifested. . The bone marrow erythrocyte system is hyperplasia. Eosinophilia is also seen in peripheral blood and bone marrow. Plasma albumin and serum iron levels were significantly reduced in critically ill patients.

2. Fecal feces can be diagnosed by detecting the eggs or the culture of the hooks.

Differential diagnosis

In the diagnosis process, dermatitis, anemia, malnutrition, etc. caused by other causes, such as gastric or duodenal ulcer disease, intestinal tuberculosis, chronic enteritis and other intestinal parasitic diseases, should be excluded.

diagnosis:

1. Epidemiological data In the endemic areas, there are bare-handed bare feet that come into contact with farmland soils and those who have had a history of typical rashes.

2. Clinical features are slow onset, fatigue, good food and easy hunger, and labor decline. Chronic anemia and anemia of cardiac insufficiency. Children have heterosexuality, malnutrition and developmental disorders.

3. Laboratory examination of feces, detection of hook eggs or hatching hooks is the basis for diagnosis. Different degrees of anemia (small red blood cell hypopigmentation), eosinophils, plasma albumin and serum iron levels were significantly reduced in the later stages of the disease. Others such as intradermal tests, immunological examinations, etc. are helpful for diagnosis, but no specificity.

The material in this site is intended to be of general informational use and is not intended to constitute medical advice, probable diagnosis, or recommended treatments.