Arthropod bite or sting - Cellulitis DDx
Arthropods include insects (stinging or venomous hymenoptera [bees, wasps, fire ants] and non-venomous insects [mosquitoes, chiggers, fleas, etc]) as well as ticks, mites, spiders, scabies, and body lice.
Arthropods may transmit human illness (tick fever, Lyme disease, Rocky Mountain spotted fever, a variety of encephalitides, malaria, etc), and venomous bites may trigger systemic allergic reactions, including anaphylaxis.
In contrast to cellulitis, bites and stings are often multifocal and may be bilateral. There may be a visible punctum, and the patient may have a recollection of insect exposure. There may be concomitant cellulitis, however, as bites and stings often serve as an important nidus of infection.
T63.481A – Toxic effect of venom of other arthropod, accidental (unintentional), first encounter
409981006 – Arthropod bite
- Cellulitis or erysipelas
- Cat-scratch disease
- Majocchi's granuloma
- Blistering distal dactylitis
- Herpetic whitlow
- Eosinophilic cellulitis
- Fixed drug eruption
- Scabies should be identified by microscopic exam and treated separately.
- Sweet's syndrome
- Pityriasis lichenoides et varioliformis acuta
- Lymphomatoid papulosis