The recovery time of baby's shrimp allergy varies from individual to individual, and usually it will be relieved within 24-48 hours. However, if the symptoms are serious or last for a long time, it is recommended to seek medical advice in time.

Stop eating shrimp food immediately after the baby has symptoms of shrimp allergy, and observe the changes of baby's symptoms. If the symptoms are mild, the following measures can be taken to alleviate them:

1. Let the baby drink plenty of water to keep the body hydrated;

2. Avoid exposing your baby to other substances that may cause allergies, such as pollen and dust;

3. You can give your baby antihistamines, such as chlorpheniramine and loratadine, to relieve symptoms.

It should be noted that if the baby has symptoms such as shortness of breath, swollen throat and itchy skin, he should seek medical attention immediately. The doctor may inject adrenaline or other drugs into the baby to relieve the symptoms.