What is the first step to take when exposed to a chemical substance on the skin?

When exposed to a chemical substance on the skin, the top priority is always to ensure the safety of the area and the responder before taking any action. The crucial first step is to remove the affected person from the source of the chemical or to remove the substance itself from the skin as quickly as possible. Ensure that you do not personally become exposed to the substance while providing assistance by using appropriate personal protective equipment if available [3].

Handling Contaminated Material and Skin Decontamination

After moving the affected person from the source of danger, immediately remove any clothing or jewelry contaminated with the chemical, being careful not to spread the substance to unaffected areas of the body. If the chemical is solid or dry, it should be gently removed by brushing it off using a soft brush, taking extreme caution to ensure no particles are inhaled or reach the eyes. Once dry residues are removed, begin the process of decontaminating the skin with running water [3].

Important Warnings When Using Water for Decontamination

Rinsing the affected area with cool running water for at least 15 minutes is a standard, effective procedure in most cases to reduce the concentration of the chemical. However, there are critical medical exceptions to note; water should not be used in cases of contamination with certain substances such as quicklime (calcium oxide) or elemental metals (such as sodium, potassium, magnesium, phosphorus, and lithium). The reaction between water and these substances may worsen the burn or cause a dangerous exothermic chemical reaction, so consult professionals immediately if you are unsure about the nature of the substance [3].

When Does the Condition Require Urgent Medical Intervention?

Certain symptoms necessitate immediate emergency medical assistance, as they indicate potential systemic absorption of the chemical or internal injury. Call emergency services immediately if the person exhibits difficulty breathing, loss of consciousness, or seizures. You must also seek medical help if the burns are severe or second/third-degree, or if systemic symptoms such as nausea, dizziness, or muscle spasms appear. Never leave the person alone in these cases, and monitor their breathing and level of consciousness closely [3].

Aftercare and Prevention Procedures

After finishing the rinsing process, cool, moist compresses can be used to alleviate pain, and the area can be covered with a sterile, dry bandage to protect it from pressure and friction. It is essential not to attempt to neutralize the chemical using other substances, and avoid applying home ointments or creams that may react with chemical residues. Prior preparation for emergencies and developing a clear home plan can significantly reduce anxiety and losses resulting from these accidents [1]. For more information on how to prevent these risks and secure your home against chemical accidents, please review Chemical Emergencies: Your Guide to Handling Household and Outdoor Incidents (Arabic) to enhance your safety standards.

Medical references

• Chemical burn or reaction
• Chemical Emergencies