Blood pressure readings around 155/90 mmHg fall in the range of hypertension and should not be ignored, as long-term uncontrolled levels can increase the risk of heart disease, stroke, and kidney problems. You should consult a doctor to confirm the diagnosis and discuss whether medication is needed, while also making important lifestyle changes such as reducing salt intake, eating a balanced diet rich in fruits and vegetables, maintaining a healthy weight, exercising regularly (like brisk walking for 30 minutes most days), limiting alcohol, quitting smoking, managing stress, and ensuring good sleep. It is also helpful to monitor your blood pressure regularly at home and keep a record to share with your doctor. Seek urgent care if you experience symptoms like severe headache, chest pain, breathlessness, or vision problems.