Lower lip suddenly long black spots, may be hyperpigmentation, hemangioma, hyperpigmentation – gastrointestinal polyp syndrome and other factors.
1. Hyperpigmentation: if you don’t do a good job of sun protection and are exposed to ultraviolet rays for a long time, it will increase the activity of melanocytes in the lip area and secrete a large amount of melanin, which, when precipitated in the lip area, will lead to the situation of sudden black spots on the lower lip.
2. Hemangioma: If the balance between local angiogenic factor and angiogenic inhibitory factor is out of balance, it will make the local endothelial cells appear abnormal transformation, thus causing the proliferation of vascular endothelial cells abnormally, which will make the patients have the symptom of sudden black spots on the lower lip.
3. Hyperpigmentation-gastrointestinal polyp syndrome: mainly manifested as dark brown or black pigmented spots mainly distributed in the perioral area, lips, oral mucosa; polyps appear later than pigmented spots, most patients have obvious weight loss, followed by gastrointestinal symptoms, this syndrome can also be accompanied by nail dystrophy, scoliosis, ovarian cysts, dilated skin capillaries and so on.
There are other reasons for the sudden growth of dark spots on the lower lip, such as pigmented moles, exposure to chemicals and heavy metals, etc. It is necessary to go to the hospital in time to find out the reasons and cooperate with the doctor to give targeted treatment.