It is possible that the chronic gingivitis occurs due to the lack of oral hygiene and plaque deposition, resulting in swollen and painful gums; it is also possible that the gums are inflamed and swollen due to irregular life, frequent late nights, lack of vitamin B or folic acid due to a diet with few fruits and vegetables and a preference for spicy and stimulating food.
If you still have frequent gum swelling and pain after adjusting your life routine and paying attention to oral hygiene, it is recommended to visit a regular dental hospital to improve the relevant examination to see if there is a systemic disease causing gum swelling and pain.