Purple lips: What health issues could this indicate?

Generally, purple lips may result from physiological causes or pathological conditions such as asthma and pulmonary embolism. A detailed analysis is as follows:

I. Physiological Causes

This usually occurs due to inadequate sun protection, with the lip area being exposed to ultraviolet radiation for prolonged periods, leading to melanin deposition in the skin of the lips and resulting in a change in color. In such cases, patients need not be overly concerned. The condition can be improved by increasing vitamin intake and maintaining daily sun protection.

II. Pathological Causes

1. Asthma

This typically occurs when a patient has a severe reaction upon exposure to certain substances, causing airway constriction and narrowing. During an attack, patients may experience difficulty breathing and rapid breathing. In cases of extreme oxygen deprivation, the lips may turn purple. Patients can use medications such as beclomethasone dipropionate aerosol or salbutamol inhaler under medical guidance to relieve asthma symptoms.

2. Pulmonary Embolism

This refers to a disease caused by blockage of the pulmonary artery. Patients may experience chest pain and dizziness. When the embolus is large, they may also suffer from intense pressure-like chest pain and sudden shortness of breath. Additionally, cyanosis—bluish or purplish discoloration—may appear on the mouth, lips, fingernails, and other areas. Under medical supervision, patients may take anticoagulant medications such as warfarin sodium tablets or rivaroxaban tablets. In more severe cases, surgical thrombectomy may be required.

Besides the above-mentioned factors, purple lips may also be associated with congenital heart disease, coronary atherosclerotic heart disease, cerebral infarction, and other conditions. If the underlying cause is unclear, patients should promptly visit a hospital for evaluation and receive timely treatment once the cause is identified.