Related Experiment Video

Updated: Dec 29, 2025

Fluorescent In Situ Hybridization and 5-Ethynyl-2'-Deoxyuridine Labeling for Stem-Like Cells in the Hydrozoan Jellyfish Cladonema pacificum

Fluorescent In Situ Hybridization and 5-Ethynyl-2'-Deoxyuridine Labeling for Stem-Like Cells in the Hydrozoan Jellyfish Cladonema pacificum

Published on: August 3, 2022

Clinical characteristics of jellyfish stings in Japan

Toru Hifumi^1,2, Yoshimune Fukuchi^2,3, Norio Otani^1,2

¹Emergency and Critical Care Medicine St. Luke's International Hospital Tokyo Japan.

Acute Medicine & Surgery

|January 29, 2020

Abstract

Aim:

Jellyfish known as "habu-kurage" (Chironex yamaguchii) inhabit the waters surrounding Okinawa and Amami, Japan, and jellyfish stings are limited to areas outside the Japanese main island. However, the shifts promoted by global warming and increasingly intensive interactions with people have led to concerns regarding the possibility of increased jellyfish stings on the main island of Japan. Similar concerns are being raised all over the world. However, studies examining clinical characteristics of jellyfish stings have been limited to Australia, the USA, Europe, and South-East Asia. Thus, this study aimed to examine for the first time the clinical characteristics of jellyfish stings in Japan.

Methods:

We undertook retrospective questionnaire surveys from January 2013 to December 2017 to determine patient characteristics, treatment, and clinical outcomes. We compared patient characteristics between tourists and non-tourists. The primary end-point of the present study was to clarify the clinical characteristics of jellyfish stings.

Results:

Over the 5-year study period, 204 patients were identified from eight hospitals based on the basic questionnaire, and 35 patients with moderate-to-severe jellyfish stings were also identified. All patients recovered well, including five patients with severe jellyfish stings. Antivenom was not given. The time intervals from the occurrence of jellyfish stings to hospital arrival significantly differed between tourists and non-tourists (P = 0.049), and all tourists visited the emergency department (P = 0.009).

Conclusions:

Approximately 40 cases of jellyfish stings occurred annually in Japan between 2013 and 2017. Patients recovered well without the use of antivenom.

Keywords:

Antivenom Okinawa emergency department jellyfish tourist

More Related Videos

Evaluation of the Productivity of Social Wasp Colonies Vespinae and an Introduction to the Traditional Japanese Vespula Wasp Hunting Technique

Evaluation of the Productivity of Social Wasp Colonies Vespinae and an Introduction to the Traditional Japanese Vespula Wasp Hunting Technique

Published on: September 11, 2019

Isolation and Characterization of Extracellular Vesicles from Adult Schistosoma japonicum

Isolation and Characterization of Extracellular Vesicles from Adult Schistosoma japonicum

Published on: May 22, 2018

Related Concept Videos

Allergic Reactions

Allergic Reactions

Allergic Drug Reactions

Allergic Drug Reactions

Allergic reactions related to drugs are hypersensitivity responses driven by the immune system and bear no connection to the drug's therapeutic action. While drugs in isolation do not trigger an immune response, they can interact with endogenous proteins to form antigens. These antigens stimulate lymphocytes to produce antibodies. IgE-type antibodies attach themselves to mast cells. Upon subsequent exposure to the same stimulus, the antigen-antibody interaction is initiated, unleashing...

Local Anesthetics: Differential Sensitivity of Nerve Fibers

Local Anesthetics: Differential Sensitivity of Nerve Fibers

Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...

Local Anesthetics: Adverse Effects

Local Anesthetics: Adverse Effects

While local anesthetics are generally safe and well-tolerated, they can occasionally cause adverse effects that vary in severity. Local anesthetics can induce toxicity at two distinct levels. They can either produce local effects through direct contact with the neural elements or be absorbed into the bloodstream from the injection site, leading to systemic effects.
Once absorbed into the systemic circulation, local anesthetics can affect the organs that depend on the functioning of sodium...

Characteristics of JFET

Characteristics of JFET

Junction Field Effect Transistors (JFETs) exhibit specific operational characteristics based on the relationship between the drain current (id) and the drain-source voltage (Vds), along with varying gate-source voltages (Vgs).
The core of a JFET's operation is controlling drain current by modulating the gate-source voltage. When the drain and gate voltage are set to zero, the JFET exhibits no net current flow, representing a state of equilibrium. The drain current increases linearly as the...

Resting Membrane Potential

Resting Membrane Potential

The relative difference in electrical charge, or voltage, between the inside and the outside of a cell membrane, is called the membrane potential. It is generated by differences in permeability of the membrane to various ions and the concentrations of these ions across the membrane.
The Inside of a Neuron is More Negative
The membrane potential of a cell can be measured by inserting a microelectrode into a cell and comparing the charge to a reference electrode in the extracellular fluid. The...

Articles linked to this work by shared authors, journal, and citation graph.

Demographic characteristics and psychosocial backgrounds of patients with dextromethorphan overdose in Japan: A multicenter prospective observational study.

PCN reports : psychiatry and clinical neurosciences·2026

Risk factors for sepsis development in trauma patients admitted to the ICU in Japan: a retrospective cohort study using the Japan trauma data bank.

BMJ open·2026

Ruxolitinib-Associated Improvement in Post-transplant Air-Leak Syndrome Complicating Steroid-Dependent Organizing Pneumonia: A Case Report.

Cureus·2026

Development of a Consensus-Based Checklist for Physician-Performed Prehospital Endotracheal Intubation in Japan: A Two-Round Delphi Study.

Acute medicine & surgery·2026

Association between bystander type and successful bystander-delivered shocks in urban Tokyo, Japan.

Clinical and experimental emergency medicine·2026

Turret truck-related head and neck injuries in a Japanese wholesale market: Clinical characteristics, risk factors, and the need for preventive measures.

Injury·2026

See all related articles