Table 5: Summary of the studies included for the qualitative review with

methodology used and methodological quality.

Main

author

Title

Level of

evidence

Grade of

recommendation

Type of

study

Intervention

Auer

Arthur I.17

Surgery for necrotic bites of the brown spider

III-1

C

Non-randomized clinical trial

Surgical treatment*

Rees

Riley S.18

Brown recluse spider bites. A comparison of early surgical excision versus dapsone and delayed surgical excision

III-1

C

Non-randomized clinical trial

Surgical treatment* vs. dapsone

Staneff

John19

Presentation of an effective protocol for the treatment of myodermonecrolysis due to cutaneous loxoscelism

IV

D

Case series

Surgical treatment

Maguiña

Ciro20

Dapsone (DDS) in cutaneous loxoscelism

II

B

Randomized clinical trial

DDS (phyaminodiphenyl-sulfone) vs chlorpheniramine

Maguiña

Ciro21

New therapeutic schemes in cutaneous loxoscelism in Lima, Peru

II

B

Randomized clinical trial

Dapsone (DDS) vs chlorphenamine

Rees

Riley S.22

The diagnosis and treatment of brown recluse spider bites

II

B

Randomized clinical trial

Dapsone vs. anti-loxosceles serum

Borrasca-

Fernandes

Carla23

Temporal evolution of dermo-necrosis in loxoscelism

III-2

C

Cohort

Anti-loxosceles serum

Malaque

Ceila M.S.24

Impact of antivenom administration on the evolution of cutaneous lesion loxoscelism

III-2

C

Cohort

Anti-loxosceles serum

Isbister

Geoffrey K.25

Funnel-web spider bite. A systematic review of recorded clinical cases

III-3

C

Systematic review

Anti-loxosceles serum

Manriquez

Juan J.26

Cutaneous and cutaneous-visceral loxoscelism: a systematic review

III-3

C

Systematic review

Combination therapy

Hobbs

Gregory D.27

Comparison of hyperbaric oxygen and dapsone therapy for Loxosceles envenomation

II

B

Randomized clinical trial

Hyperbaric oxygen vs. dapsone

Phillips

Scott28

Therapy of brown spider envenomation. A controlled trial of hyperbaric oxygen, dapsone, and cyproheptadine.

II

B

Randomized clinical trial

Hyperbaric oxygen vs. dapsone vs. cyproheptadine

Maynor

M.L.29

Brown recluse spider bites. Beneficial effects of hyperbaric oxygen

II

B

Randomized clinical trial

Hyperbaric oxygen

Hadanny

Amir30

Non-healing wounds caused by brown spider bites: application of hyperbaric oxygen therapy

III-1

C

Non-randomized clinical trial

Hyperbaric oxygen

Del Puerto

Constanta31

Experience in cutaneous and visceral cutaneous loxocellularism

IV

D

Case series

Combination therapy

Mold

James W32

Management of brown recluse spider bites in primary care

IV

D

Case series

Combination therapy

Schenone

H33

Loxoscelism in Chile: epidemiological, clinical and experimental studies

IV

D

Case series

Combination therapy

Wong S.

Lindsey34

Loxoscelism and negative pressure wound therapy (vacuum-assisted closure): A clinical case series.

IV

D

Case series

Negative pressure (vacuum-assisted closure)

Chrysostomou D35

Spider bite wounds can silver help

IV

D

Case series

Nanocrystalline silver

* Surgical treatment: decompressive fasciotomies, necrosectomies,

and posterior coverage (flaps and grafts).

Combined therapy: dapsone, chlorphenamine, systemic corticosteroids,

antibiotics, antihistamines.