Symptoms of a shellfish allergy can include hives, itching of the skin, abdominal pain, diarrhea and a tingling in the mouth, according to Mayo Clinic. For severely allergic individuals, symptoms can also include swellin... More »

The accepted treatment for a reaction due to a shellfish allergy is to take corticosteroids and antihistamines to control the symptoms, reports the American College of Allergy, Asthma & Immunology. In severe cases, patie... More » Health Conditions & Diseases Allergies

Food allergies potentially causing itchy skin include allergies to wheat, eggs, tree nuts, peanuts, fish, shellfish, wheat and soy, as noted by WebMD. In children and adults, skin reactions to food allergens range from u... More » Health Pain & Symptoms

Symptoms of shellfish allergy include swelling, itching, tingling in the mouth, wheezing and abdominal pain, states Mayo Clinic. Medical attention is necessary for such symptoms, which occur when the body's immune system... More » Health Conditions & Diseases Allergies

Symptoms of a soy allergy may include abdominal pain, tingling in the mouth, wheezing, swelling of the throat or facial area, skin redness, itching and hives, as listed by Mayo Clinic. Symptoms of anaphylaxis, a more sev... More » Health Conditions & Diseases Allergies

Symptoms of an allergic reaction to wheat include swelling, itching or irritation of the mouth, skin rashes, nasal congestion, headaches, vomiting, intestinal cramping, diarrhea and, in severe cases, anaphylaxis, accordi... More »

Symptoms of shellfish or seafood allergies include abdominal pain, diarrhea, vomiting and nausea, according to Healthline. Other symptoms include a tingling sensation in the mouth, trouble breathing, congestion, hives or... More » Health Conditions & Diseases Allergies