My baby is 11 month and her tongue is now in black...

Treatment for a Black Tongue:
First of all, the baby should be seen by a doctor for assessment of his condition as the treatment depends on diagnosis. A black tongue from food usually clears up quickly on its own. If it's caused by medication, it should go away soon after the child stops taking it. If not, their dentist can gently scrape the tongue to get rid of the color.If the black tongue is caused by an illness, it may last until the condition is properly treated. This may involve prescription antifungals or antibiotics.

Diagnosis:
Diagnosis can be done by taking the child's medical history and having a clinical examination. Complete blood tests can be done to rule out infection.

Causes of a Black Tongue in Children
Some causes of a black tongue in children are medical while others aren't.
1. Non-medical causes include:
- Drinking or eating something with a black dye or food coloring
- Drinking or eating something with natural colors that stain (like blackberries)
2. Medical causes:
- Bacterial infection of the tongue
- Black hairy tongue (lingua villosa nigra)
- Drugs: Pepto-Bismol, Aspirin
- Others

Recommendation:
It's recommended to see your family doctor for further assessment.