What are the mild, moderate and severe symptoms of allergy?

Mild symptoms of allergy are:

1. Rash on the skin
2. Itchy and watery eyes
3. Congestion of throat
4. Persistent sneezing

Moderate symptoms

1. Continuous itchiness
2. Difficulty in breathing

Severe symptoms

1. Swelling of skin
2. Swelling in throat making it difficult to breathe or swallow food.
3. Abdominal pain
4. Vomiting
5. Dizziness and mental confusion
6. Wheezing