Since both Shrimp and Lobster belong to the same family (both are classified as crustaceans) it is best to avoid both, if you have shown sensitivity to either one of them. However, to be surer about your sensitivity, you could consult an Allergy specialist for a 'Skin Prick Test' using commercially available allergen extracts from these sea foods.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.