What it is
It can be lifelong, or temporary after a gut infection or with conditions such as coeliac disease.
Most people can manage it by limiting lactose, choosing lactose-free products, or taking lactase supplements. Getting enough calcium is important.
Common signs
- Wind
- Diarrhoea
- Bloating
- Tummy cramps and pain
- Feeling sick
How it is usually diagnosed
- Removing lactose from the diet to see if symptoms improve
- Hydrogen breath test, sometimes
- Tests to rule out coeliac disease
Records worth keeping
Keeping these together makes each appointment easier, especially when you see a new doctor:
- A food and symptom diary
- Test results
- Dietitian advice
Questions to ask your doctor
- Could it be something else, such as coeliac disease?
- How much dairy can I have?
- How can I get enough calcium?
When to get help right away
Call 112 or go to the nearest emergency department if you have:
- Swelling of the lips or throat or difficulty breathing after dairy: call 112, this is an allergy, not an intolerance
This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.