What is wrong with my tongue the sides are very black also have red raised lump at back of tongue?

Possible causes of black tongue:

* Medications: Certain medications, such as antibiotics, bismuth, and some chemotherapy drugs, can cause the tongue to turn black.

* Poor oral hygiene: If you don't brush and floss your teeth regularly, bacteria and food particles can build up on your tongue and cause it to turn black.

* Smoking: Smoking can irritate the tongue and cause it to turn black.

* Dry mouth: A dry mouth can cause bacteria to grow on the tongue and turn it black.

* Dehydration: Dehydration can cause the tongue to become dry and cracked, which can make it appear black.

* Trauma: Injury to the tongue, such as a bite or burn, can cause it to turn black.

Red raised lump at the back of the tongue:

* Canker sore: A canker sore is a small, painful ulcer that can form on the tongue or inside of the mouth.

* Gingivitis: Gingivitis is inflammation of the gums, which can cause them to become red and swollen.

* Periodontitis: Periodontitis is a more severe form of gum disease that can damage the bone and tissue that support the teeth.

* Oral cancer: Oral cancer is a type of cancer that can occur in the mouth, including the tongue.

If you have a black tongue or a red raised lump at the back of your tongue, it's important to see a doctor or dentist to determine the cause and receive treatment if necessary.