When should you go to the ER for a spider bite?

Answered by Phillip Nicastro

When it comes to spider bites, it’s important to know when you should seek medical attention at the emergency room (ER). While most spider bites are harmless and can be treated at home, there are certain signs and symptoms that indicate a need for immediate medical attention.

1. Increasing pain over the first eight hours after the bite: If you notice that the pain from the spider bite is intensifying rather than subsiding, it could be a sign of an infection or a more serious reaction. This is particularly concerning if the pain becomes severe and is accompanied by other symptoms.

2. Fever, chills, and body aches: These flu-like symptoms can be indicative of a systemic reaction to the spider bite. If you experience a high fever, severe chills, and body aches, it’s important to seek medical attention as it may suggest the presence of an infection or a more severe allergic reaction.

3. Changes in the appearance of the bite wound: Pay attention to any changes in the appearance of the bite wound itself. If you notice that the center of the bite becomes pale and then turns dark blue or purple, with a red ring around it, it could indicate necrotic tissue or tissue death. This is commonly seen in spider bites from certain species, such as the brown recluse spider.

4. Development of an open sore (ulcer): If the bite wound starts to grow and becomes an open sore or ulcer, it is a serious indicator that requires immediate medical attention. The skin surrounding the wound may also appear necrotic or dying.

It’s important to note that these signs and symptoms may not be exclusive to spider bites and could indicate other medical conditions. However, if you have a known spider bite and experience any of these symptoms, it’s best not to take any chances and seek medical attention promptly.

When you go to the ER for a spider bite, the medical professionals will assess the severity of the bite, clean the wound, and provide appropriate treatment. They may prescribe antibiotics if there is an infection present or administer antivenom if necessary, depending on the type of spider bite.

If you experience increasing pain, fever, chills, body aches, changes in the appearance of the bite wound, or the development of an open sore, it is advisable to go to the ER for immediate medical attention. Prompt treatment can help prevent complications and ensure proper management of the spider bite.