Hello! This is a symptom of lip wind. Stop blowing, or it will itch! It is recommended to wash 3-4 channels with salt water every day to reduce swelling and relieve itching.

Lip wind is caused by the invasion of wind, heat and dampness, or by the accumulation of damp heat in the spleen and stomach and the evaporation of lips. Damp-heat of spleen and stomach is endogenous and attacked by wind evil; Or spleen deficiency, exogenous summer heat, leading to spleen meridian blood dryness, burning lips.

Generally, the wind of lips is the lower lip, which is wind, fire and damp heat. If it is the upper lip, it is biased towards wind and heat.