Dizziness and weakness are symptoms, not a clear diagnosis of poor circulation. Low blood pressure or a drop in blood pressure on standing may be involved; medicines and other conditions are also possible causes.
Check for warning signs first
Seek emergency help immediately for chest pain, shortness of breath, new speech or movement problems, or loss of consciousness without prompt, full recovery. Fainting during exertion or while lying down also needs immediate assessment. Do not drive yourself for treatment.
Fainting should also be medically assessed after you have recovered. Do not explain recurrent dizziness solely as low blood pressure.
What may help with a known harmless tendency
Move slowly from lying to sitting and then standing. Prolonged motionless standing, sudden changes of position and a lot of alcohol can encourage symptoms. If you feel about to faint, lie down safely and raise your legs if possible.
Drinking enough may help when you are short of fluids. This must not override a medically prescribed fluid restriction. Extra salt or a fixed high fluid intake is not general advice for everyone.
Clarify the underlying cause
Record the time, triggers, duration and accompanying symptoms, along with any blood pressure and pulse readings available. Bring a list of medicines. Measurements support the discussion but do not replace an examination. Do not stop or change prescribed medicines yourself.
Frequently asked questions
Does every episode of dizziness mean low blood pressure?
No. The course, accompanying symptoms and examination determine the assessment.
Does drinking more always help?
No. The cause and individual instructions must be taken into account.
Further reading
Iron deficiency and diagnosis and Understanding magnesium deficiency.
Sources
General information, not individual diagnosis or treatment.
