Which species of scorpions are considered to be of medical significance in the US?

The species of scorpions considered to be of medical significance in the United States are primarily found in the desert southwest. This region is home to the more venomous species, such as the Arizona bark scorpion, which poses a risk due to its venom that can cause serious reactions, especially in children or those with compromised health.

In contrast, not all scorpions are venomous or pose a significant health risk, as many species can be found in different parts of the country, including coastal areas, but they typically do not exhibit dangerous venom levels. The term "medical significance" relates specifically to the potential for envenomation to cause health issues, which is notably present in certain scorpions of the desert southwest. Thus, the emphasis on the unique threat posed by specific species in that geographical area clarifies why it is crucial to focus on them rather than considering all scorpions or those from non-threatening regions.