Fluctuating temperatures during humid weather can stimulate the sympathetic nervous system, disrupt blood pressure regulation, and increase blood flow pressure on arterial walls.

In the last week of february, Linh, her eyes dark from sleepless nights, waited for medication for her child at a clinic in Ha Noi, a scene reflecting a wider post-Tet health crisis.

Phuong, 47, from Da Nang, felt numbness from his hand to his head while driving, prompting him to seek the nearest medical facility to prevent an accident.

High blood pressure often has no clear symptoms, though it can sometimes cause morning headaches, fatigue, mild shortness of breath, or blurred vision.

Anh Nam, 30, a loud snorer, was diagnosed with sleep apnea causing hypertension and underwent surgery to correct his nasal turbinates, nasal septum, pharyngeal velum, and tonsils.

Ms. Tuyet, 67, who has long suffered from hypertension, recently experienced mild swelling in her limbs and was diagnosed with kidney damage during a medical examination.

Northern Vietnam is experiencing an intense cold spell, making people moving from warmer regions susceptible to "cold shock," doctors advise wearing multiple layers, consuming heat-generating foods, and practicing breathing exercises to help the body adapt.

Haunted by his provincial origins and eager for early success, Tung plunged into a demanding work schedule, leaving almost no room to breathe.

After a badminton match, a 60-year-old male coach suddenly felt tired, experienced shortness of breath, and then suffered cardiac arrest right on the practice court; the 115 emergency team performed intensive cardiopulmonary resuscitation for 70 minutes but was unsuccessful.