Pathology
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Atlas of dermatopathology
Josef Feit, Hana Jedličková, Günter Burg, Luděk Matyska, Spasoje Radovanovic et al.
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+ Introduction
+ Literature
+ Support
+ Skin biopsy
+ Non-tumorous skin diseases
+ Skin tumors
+ Cysts of the skin and subcutis
+ Soft tissue lesions
+ Some lesions of the oral cavity
+ Dermatovenerology
+ Collection of histological slides by prof. Günter Burg
+ Collection of histological slides by prof. Werner Kempf
+ Collection of histological slides of dr. Ram Chandra Adhikari
Insect bite reaction
Clinical signs
  • papules, vesicles, later sometimes pustules
  • variable edema
  • itching, pain
Histology

Histology variable, usually superficial and deep inflammatory infiltrate of variable density, maximal in the site of injury, usually containing many eosinophils. The site of the bite is often centered on a follicle. Sometimes remnants of insect can be found. Vasculitis is sometimes present. History, season and other information can help in diagnosis.

Pictures

Insect bite reaction: Insect bite reaction, HE 10x (269) Insect bite reaction, HE 20x (271) Insect bite reaction, HE 40x (273)

Giemsa staining: Insect bite reaction, Giemsa 20x (270) Insect bite reaction, HE 40x (272)

Another case with subepidermal and intraepidermal vesicles: Insect bite reaction, HE 10x (274) Insect bite reaction, HE 20x (276) Insect bite reaction, Giemsa 20x (275) Insect bite reaction, HE 40x (277)

Another case: Insect bite reaction, HE 40x (2104)

Another case: Arthropod bite, HE 40x (2685) Arthropod bite, HE 40x (2686)

Another case: Insect bite reaction, HE 20x (5340)

Another case: Reaction to insect bite, HE 40x (6128)

Another case: Insect bite reaction, HE 20x (5180)

Another case: Insect bite reaction, HE 20x (5337)

Another case: Insect bite reaction, HE 20x (5338)

Bullous insect bite: Bullous insect bite, HE 60x (10647) Bullous insect bite, HE 60x (10648)

Bullous insect bite: Insect bite reaction, HE 40x (12687)

Insect bite, serial section (tissue reaction is minimal, agent unknown): Insect bite reaction, HE 40x (4994) Insect bite reaction, HE 40x (4995) Insect bite reaction, HE 40x (4996)

Reaction to insect injury: Insect bite reaction, HE 60x (12426)

Reaction to insect injury: Insect bite reaction, HE 60x (12070) Insect bite reaction, HE 60x (12071)

Spider bite reaction: Insect bite reaction (spider), HE 40x (5117)

Large necrotizing lesion of a child after (supposed) spider bite: Spider bite, HE 60x (13434)

Spider bite reaction: Trauma by spider, HE 60x (14609)

Chronic reaction to the tick, scrotum: Tick, chronic reaction, scrotum, HE 60x (13818)