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Dizziness: causes, warning signs & what to do
"Dizzy" can mean light-headedness or a spinning sensation (vertigo). Most causes are benign — inner ear, dehydration, blood pressure — but some need urgent care.
Common causes of dizziness
- Inner-ear problems (BPPV, labyrinthitis) — spinning vertigo
- Low blood pressure on standing / dehydration
- Low blood sugar
- Anaemia
- Anxiety or hyperventilation
- Medication side effects
When to see a doctor urgently
- Dizziness with slurred speech, face droop, weakness or double vision — call your local emergency number now (stroke)
- Dizziness with chest pain, fainting or a very fast/slow pulse
- Sudden severe headache with the dizziness
- A recent head injury
Frequently asked questions
What is the difference between dizziness and vertigo?
Dizziness is a general light-headed feeling; vertigo is a false sense of spinning, usually from the inner ear. The cause and treatment differ.
Why do I feel dizzy when I stand up?
A brief drop in blood pressure on standing (postural hypotension) — often from dehydration or medicines. Rising slowly and drinking fluids helps; persistent cases need review.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.