Shellfish

Definition

This is poisoning from eating shellfish which have eaten a poisonous dinoflagellate (a single-celled algae found mainly in the ocean).

Poisonous Ingredient

• A neurotoxin (affects the nervous system) found in the dinoflagellate.
  

Where Found

• mussels
  
• clams
  
• oysters
  
• scallops
  

From June through October, shellfish are more likely to eat poisonous dinoflagellate.

Note: This list may not be all inclusive.

Symptoms

• body as a whole
  o numbness or tingling around the mouth, lips, tongue, and face
  o muscle weakness
  o paralysis of the legs and/or arms
  o lightheadedness
  o headache
  
• respiratory
  o stop breathing
  
• gastrointestinal
  o nausea
  o Vomiting
  o abdominal cramps
  o diarrhea
  

Home Treatment
Shellfish poisoning may be a medical emergency. With sudden or significant symptoms, the person should be taken immediately to an emergency medical facility. You may need to call the local emergency number (such as 911). Otherwise, call Poison Control for appropriate treatment information.

Before Calling Emergency

Determine the following information:

• the patient's age, weight, and condition
  
• the name of the product (ingredients and strengths if known)
  
• the time it was swallowed
  
• the amount swallowed
  

Poison Control, or a local emergency number

If the situation is not clear, they will instruct you if it is necessary to take the patient to the hospital.

Bring the contaminated shellfish with you to the emergency room if so instructed.

What to expect at the emergency room

Some or all of the following procedures may be performed: