<s>[INST] My tongue is very weird, I woke up this morning and noticed that my tongue had this patch at the left rear, the patch has not got the pale pinkish tongue body colour like the rest of my tongue but has a brighter pink and very big taste buds I m quite worried because it feels uncomfortable and I have an odd taste in my mouth I m not sure if its just paranoia. I brushed my teeth and tongue (with my toothbrush) and that didnt solve the problem. [/INST] Hello, Thanks for consulting Chat Doctor, Read your query patches on tongue can be geographic tongue, median rhomboid glossies, or decapitation of papillae these patches are seen in some patients with nutritional deficiency, vitamin B 12 deficiencies also. Don't be worried so much I will advise you to take nutritional diet, vitamin B supplements and consult oral surgeon for oral examination of tongue to rule out the cause. Hope this will help you. </s>