Discoloration of the lips is a state where the color of the lips transforms from the standard red or pink color to dark shades. It can have an effect on women, men and also kids. It is not bounded by age. Some of the key causes of discoloration of lips are:

Smoking
Chewing of tobacco
Chemotherapy
Some specific diseases
Too much use of fluoride
Because of some mouthwashes
Some particular medications and drugs
Bad eating and drinking habits

Main Symptoms Of Lip Discoloration

Loss of natural color of lips
Darkness of lips
In some severe cases foul breath also
Some cases inflammation of the roof of the mouth