When people search for information about the danger of small arachnids, they often ask if baby scorpions are poisonous. It is important to clarify that scorpions are venomous, meaning they inject toxins through a sting, rather than poisonous, which relates to toxins being absorbed or ingested. A “baby scorpion” is technically a nymph or an instar. They are indeed venomous from the moment they are born, as the size of the scorpion does not determine the presence of a functional venom delivery system.
Do Juvenile Scorpions Possess Venom?
Scorpions are unique because they give birth to live young, which are sometimes called scorplings. These juveniles emerge from the mother with all the necessary biological equipment to defend themselves. Specifically, they possess a fully formed telson, which is the structure at the end of the tail containing the stinger and a pair of functional venom glands.
The glands are active from the very first instar, meaning the young scorpion is capable of injecting venom if it feels threatened. Newborn scorplings typically climb onto their mother’s back, where they remain for up to several weeks until they undergo their first molt. Despite this protective period, their ability to sting is fully developed and ready for use in defense. They are not waiting for their stinging apparatus to mature or for their venom to develop; it is an innate feature of their biology.
The Comparative Danger of Smaller Scorpions
A widespread and dangerous misconception is that a smaller scorpion poses a lesser threat than an adult. While a juvenile scorpion has a smaller overall venom volume, or yield, its sting can still be medically significant, especially in species known to be harmful to humans. The venom composition itself is similar to that of the adults in many species, containing potent neurotoxins designed to disrupt the nervous system.
For a medically dangerous species, such as the Arizona bark scorpion, a sting from a juvenile is a serious event. Smaller scorpions may also lack the motor control to regulate the amount of venom they inject, unlike adults who can sometimes deliver a “dry sting” or a warning shot. This lack of control can result in the juvenile injecting a full, uncontrolled dose of the venom it possesses, which is a high dose relative to its small size.
The small size of a nymph also contributes to the danger in a practical sense, as they are easier to overlook. They can hide in tiny cracks, clothing, or shoes, increasing the likelihood of accidental contact. Furthermore, because they are so small and often pale, people may struggle to correctly identify the species, leading to an underestimation of the risk. Medical assessment is always advised following a sting, particularly when the species is unknown.
Immediate Steps After a Scorpion Sting
Following any scorpion sting, regardless of the arachnid’s size, the immediate priority is to administer basic first aid and monitor the individual for systemic reactions. Begin by thoroughly cleaning the wound site with soap and water to prevent secondary infection. Applying a cool compress or an ice pack wrapped in a cloth to the area can help to manage localized pain and swelling.
Over-the-counter pain relievers, such as acetaminophen or ibuprofen, can be used to alleviate discomfort. The area of the sting should be kept still and rested to slow the potential spread of any toxins. It is important to contact a poison control center for guidance, especially if the sting involves a young child or an elderly person, as these groups are at higher risk for severe symptoms.
Emergency medical attention is required if certain severe symptoms develop, which typically indicate a systemic reaction to the neurotoxins. These warning signs include:
- Muscle twitching, jerking movements, or spasms that spread away from the sting site.
- Difficulty breathing.
- Slurred speech or drooling.
- Trouble swallowing.
- Widespread numbness or a seizure.

