T63.613 Toxic effect of contact with Portuguese Man-o-war, assault

Name of the Condition

• Toxic effect of contact with Portuguese Man-o-war, assault

Summary

This condition describes adverse health effects resulting from contact with the Portuguese Man-o-war, a marine cnidarian, where the exposure is due to assault. The effects typically involve localized skin reactions from its venomous tentacles, though systemic reactions may occur in severe cases. The code is used when the toxic effects are the primary focus of care and the contact is attributed to assault.

Causes

Contact with the Portuguese Man-o-war’s tentacles introduces venom into the skin. The venom contains toxins that trigger inflammatory responses, leading to pain, irritation, and potential systemic effects if absorbed in large amounts. In this context, the exposure is intentional and non-consensual, as defined by assault.

Risk Factors

• Being in coastal waters where Portuguese Man-o-war are present during an assault incident.
• Lack of protective clothing (e.g., wetsuits) in marine environments during such incidents.
• Activities in areas with known Portuguese Man-o-war populations that may increase exposure risk during assault.

Symptoms

• Immediate localized pain, burning, or stinging at the contact site.
• Redness, swelling, or raised welts (whiplike marks from tentacles).
• Itching, numbness, or tingling in the affected area.
• Systemic symptoms (e.g., nausea, muscle spasms, or difficulty breathing) in severe exposures.

Diagnosis

Clinical evaluation of symptoms and exposure history, including confirmation of assault. Identification of characteristic tentacle marks or confirmation of contact with the organism. Laboratory tests are rarely needed unless systemic toxicity is suspected.

Treatment Options

• Immediate removal of tentacles with seawater (avoid freshwater, which may worsen venom release).
• Application of hot water (45°C) to the affected area for pain relief.
• Use of topical analgesics or antihistamines for localized symptoms.
• Systemic treatments (e.g., antivenom, corticosteroids) for severe or systemic reactions.
• Wound care to prevent infection.

Prognosis and Follow-Up

Most cases resolve within days with appropriate treatment. Severe systemic reactions may require extended monitoring. Follow-up is recommended if symptoms persist or worsen, especially for signs of infection or delayed hypersensitivity.

Complications

• Secondary skin infections from tentacle contact.
• Allergic reactions or anaphylaxis in susceptible individuals.
• Chronic pain or scarring in severe cases.
• Respiratory distress or other systemic effects in extreme exposures.

Lifestyle & Prevention

• Avoid coastal waters in areas with high Portuguese Man-o-war activity, particularly during known bloom seasons.
• Wear protective clothing (e.g., wetsuits, gloves) when in marine environments.
• Educate individuals on recognizing and avoiding Portuguese Man-o-war to reduce exposure risk.

When to Seek Professional Help

Seek immediate medical attention if:

• Severe pain, swelling, or systemic symptoms (e.g., difficulty breathing, nausea) occur.
• Signs of infection (e.g., pus, increasing redness) develop.
• Symptoms worsen or do not improve after initial self-care.

Tips for Medical Coders

Use this code when the toxic effect of contact with the Portuguese Man-o-war is the primary focus of care and the exposure is due to assault. Document the clinical findings (e.g., tentacle marks, systemic symptoms) and the context of assault to support code assignment. Ensure the code aligns with the clinical scenario and documentation.