What could a rough patch in the middle of tongue be?

There are a few conditions that could cause a rough patch in the middle of the tongue:

* Median rhomboid glossitis: This is a benign condition that is characterized by a smooth, red patch in the middle of the tongue. It is usually painless and does not require treatment.

* Geographic tongue: This is a condition that causes the tongue to develop red, inflamed patches that are surrounded by a white border. It is not usually painful and does not require treatment.

* Oral lichen planus: This is a chronic inflammatory condition that can affect the mouth, including the tongue. It can cause red, lacy patches to develop on the tongue. Oral lichen planus can be painful and may require treatment.

* Candidiasis: This is a fungal infection that can affect the mouth and tongue. It can cause white, creamy patches to develop on the tongue. Candidiasis can be treated with antifungal medications.

If you are experiencing a rough patch in the middle of your tongue, it is important to see a doctor to get a diagnosis and treatment if necessary.