5) Scorpion Sting Symptoms

Essential Scorpion Sting First Response by Jonathan Leeming

Introduction

In southern Africa, the vast majority of scorpion stings result in little more than class 1 and 2 symptoms, requiring no professional medical intervention whatsoever. At the other extreme, southern Africa is home to 2 species of scorpion that are collectively responsible for an estimated 8 to 12 deaths per year.

Scorpion venom disrupts the nervous system in various ways and at various levels. Understanding the severity of symptoms is vital for appreciating the urgency of the situation, pre-empting any future symptoms, and challenges that may occur while transporting the patient to medical assistance.

The following classes of symptoms are the foundations for effective first response.

These classes also relate to bites and stings from other venomous animals, such as spiders, snakes, stingrays, stone fish, centipedes, bees and wasps. These classes do not increase in equal steps nor on a linear scale, but rather define boundaries, indicate outcomes and required action. These classes relate to the sum of the patient’s symptoms.

Scorpion sting symptoms can be divided into immediate and delayed symptoms. Recognising and understanding how symptoms develop is important for effective first response.

  • Localised Symptoms - These develop first and may be intolerable to a point where the urgency of the situation is difficult to ignore. Although localised symptoms are never life threatening, the severity of these symptoms is often an important and reliable indication as to severity of future systemic symptoms. 
  • Systemic symptoms - Develop after the sting and are more impactful than localised symptoms. Systemic symptoms are an indication of class 3 or 4 symptoms.

Understanding how symptoms develop and the associated timeframes, offer insight into the progression of symptoms from immediate to delayed.

The risk of bacterial infection is low because the sting site does not develop into an open lesion. The antibacterial properties of scorpion venom may also  reduce the risk of bacterial infection. Use of antihistamines is not advised unless the patient is experiencing an allergic reaction. Life threatening allergic reactions to scorpion venom are very rare.

Location of Scorpion Stings

The majority of scorpion stings in humans occur when picking up objects under or in which a scorpion is sheltering, or when someone who is barefoot or is wearing open sandals stands on the scorpion. Animals are stung more often on the face, mouth or front feet.

Scorpion Stings In Humans
Scorpion Stings in Dogs
Scorpion Stings In Cats & Dogs

SAVP Scorpion Antivenom

Antivenom for the treatment of Southern African scorpion stings is manufactured by the South African Vaccine Producers (SAVP) at the National Health Laboratories in Johannesburg, South Africa. 

An initial dose of 10ml (2 vials) is required intravenously, with an additional dose of 5ml (1 vial) every 6 hours until the symptoms improve. This  additional dose is not always necessary. The same dose is used for children and adults. The effectiveness of antivenom is gradual, peaking between 2 and 6 hours after administration. SAVP scorpion antivenom is ineffective at treating a patient who has venom in the eyes. Allergic reactions to SAVP scorpion antivenom are uncommon or usually mild.

symptoms occur (class 3 or 4 symptoms), especially where high risk species, in particular the Granulated Thick-Tail Scorpion and Transvaal Thick-Tail Scorpion are involved and the patient is a child or the aged.

Further details about this content can be found in the Scorpion Sting First Response Book  Book references:

  • Terminology - page 30.
  • Scorpion Antivenom - page 83.
  • Scorpion Venomosity - page 86.
  • Location Of Scorpion Stings - page 106.
  • Symptoms - page 112.
  • Red Flags - page 131.

Purchase your copy of the book here.

I'm on a mission to reduce the burden of spider bites and scorpion stings across Southern Africa!
linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram