Hypertension is often silent and does not lead to symptoms in the early stages of the disease. Hypotonic states are often manifested by symptoms. However, the symptoms for both hypotension and hypertension are very similar. It can be dizziness, fatigue and blurred vision, headache and chest pain.
It is better to make sure of the state of the patient by accurate measurement of blood pressure by the classical methods. A package of clinical features is helpful in both entities. You need to read literature in standard textbooks of internal medicine