Problems digesting onions or garlic can have various causes, just like most other symptoms. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose problems digesting onions or garlic, we could:
Do you have any digestive problem when eating garlic or onions?
Possible responses:→ Don't know
→ Yes, trouble with garlic
→ Yes, trouble with onions
→ Trouble with both
Onion or garlic allergy is often called an 'intolerance' rather than an allergy. Symptoms may manifest immediately, or be delayed for up to a day.
An inability to digest onion or garlic may indicate compromised liver function.