Brown spots on the top and bottom of the tongue can be caused by trauma, brown pigment accumulation, lesions brown spots and other factors.
1. Trauma: traumatic teeth bite the tongue, or chewing dry, hard and sharp food, can lead to tongue damage, localized bruising can appear in the manifestation, looks like brown spots.
2. Brown pigment accumulation: long-term consumption of soy sauce, coffee, Chinese medicine, red wine and other dark-colored food can lead to pigment accumulation on the tongue, which is difficult to clean and may appear as brown spots.
3. Brown spots of lesions: when there are lesions such as hemangioma, nevus, melanin spots, etc., brown spots on the tongue can also appear.
When brown spots grow on the upper and lower part of the tongue and are accompanied by pain, erosion and other discomforts, one should consult a doctor in time and take appropriate treatments under the guidance of specialists, which can help to alleviate the discomforts as soon as possible.