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Free Health Library

Everyday Health Guide

Explore health conditions, symptoms, first aid, medical tests and family wellness.

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1,600 entries found.

Vascular Injury (Severe Bleeding)First Aid & Emergency · FA/EUrgent information
This entry includes urgent or emergency precautions. Read the original Safety and Medical Help information below. In an emergency, contact local emergency services.
First Aid Approach

Direct Pressure & Elevation

Preparation & Use

Apply firm, direct pressure directly over the bleeding site with a clean cloth or your hand. Elevate the injured limb above the level of the heart if possible. Do not remove the cloth if it soaks through; add more on top.

Safety & Precautions

EMERGENCY: Severe vascular injuries can lead to fatal blood loss in minutes.

When to Seek Medical Help

IMMEDIATELY: Call an ambulance and maintain pressure until help arrives.

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Vasovagal SyncopeA–Z Health · Cardiovascular / Neurological
Recommended Care

Lie Down & Hydrate

Preparation & Use

Lie down immediately if feeling faint. Lift legs. Drink water. Avoid triggers (heat/stress).

Safety & Precautions

SAFE recovery. CAUTION: Usually harmless but check heart if frequent.

When to See Doctor

Frequent fainting, injury during fall, or chest pain.

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VertigoA–Z Health · Neurological / ENT
Recommended Care

Epley Maneuver & Rest

Preparation & Use

Sit still in a dark room. Perform Epley maneuver (head positioning) if advised by doctor. Move slowly.

Safety & Precautions

SAFE relief. CAUTION: Rule out stroke if sudden/severe.

When to See Doctor

Vertigo with headache, double vision, or difficulty speaking.

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Vertigo Attack (Sudden Dizziness)First Aid & Emergency · First Aid
First Aid Approach

Sit Still & Focus

Preparation & Use

Have the person sit or lie down immediately to prevent a fall. Keep their head completely still. Ask them to focus their eyes on a single, stationary object. Avoid sudden head movements.

Safety & Precautions

SAFE first aid. CAUTION: Ensure the area is clear of hazards to prevent falling.

When to Seek Medical Help

If vertigo is accompanied by a severe headache, double vision, difficulty speaking, or weakness.

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Vertigo SensationCommon Symptoms · Neurological
Recommended Care

Sit Still & Focus on One Point

Preparation & Use

Sit or lie down immediately to avoid falling. Keep your head still and focus your eyes on one stationary object. Do not move your head quickly.

Safety & Precautions

SAFE relief. CAUTION: Do not drive or operate machines.

When to See Doctor

If vertigo happens suddenly with headache, double vision, or difficulty speaking.

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Viral FeverA–Z Health · Infectious Disease
Recommended Care

Rest & Hydration

Preparation & Use

Rest completely. Drink plenty of fluids/ORS. Take paracetamol for fever/body ache.

Safety & Precautions

SAFE self-care. CAUTION: Monitor for dengue/malaria signs.

When to See Doctor

Fever >3 days, rash, or difficulty breathing.

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Visceral (Internal) InjuryFirst Aid & Emergency · FA/EUrgent information
This entry includes urgent or emergency precautions. Read the original Safety and Medical Help information below. In an emergency, contact local emergency services.
First Aid Approach

Immobilize & Monitor for Shock

Preparation & Use

Keep the person completely still and lying flat. Do not give them anything to eat or drink. Cover them with a blanket to maintain body temperature. Watch for pale skin, rapid pulse, or confusion.

Safety & Precautions

EMERGENCY: Internal bleeding is invisible but life-threatening.

When to Seek Medical Help

IMMEDIATELY: Call an ambulance after any severe blow to the chest or abdomen.

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Vision Blurriness in One EyeCommon Symptoms · Eye HealthUrgent information
This entry includes urgent or emergency precautions. Read the original Safety and Medical Help information below. In an emergency, contact local emergency services.
Recommended Care

Immediate Hospital Visit

Preparation & Use

Do not wait. Go to the emergency room immediately. This could be a sign of stroke or retinal detachment.

Safety & Precautions

EMERGENCY: Needs urgent medical attention.

When to See Doctor

IMMEDIATELY: As soon as it happens.

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Vision Blurriness with Eye RednessCommon Symptoms · Eye HealthUrgent information
This entry includes urgent or emergency precautions. Read the original Safety and Medical Help information below. In an emergency, contact local emergency services.
Recommended Care

Medical Checkup

Preparation & Use

Do not rub eyes. See doctor immediately for examination and drops.

Safety & Precautions

CAUTION: Could be serious infection.

When to See Doctor

IMMEDIATELY: If vision is affected and eye is red.

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Vision Blurriness with HeadacheCommon Symptoms · Neurological
Recommended Care

Rest in Dark Room & Check BP

Preparation & Use

Lie down in dark room. Check blood pressure. Drink water.

Safety & Precautions

CAUTION: Could be High BP or Migraine.

When to See Doctor

If headache is severe, sudden, or vision does not improve.

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Vision DoubleCommon Symptoms · Eye HealthUrgent information
This entry includes urgent or emergency precautions. Read the original Safety and Medical Help information below. In an emergency, contact local emergency services.
Recommended Care

Cover One Eye & Medical Check

Preparation & Use

Cover one eye to see if double vision stops. See doctor immediately for neurological or eye exam.

Safety & Precautions

CAUTION: Can be sign of Stroke or Nerve Palsy.

When to See Doctor

IMMEDIATELY: If double vision starts suddenly.

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Vision FloatersCommon Symptoms · Eye HealthUrgent information
This entry includes urgent or emergency precautions. Read the original Safety and Medical Help information below. In an emergency, contact local emergency services.
Recommended Care

Eye Rest & Monitoring

Preparation & Use

Rest your eyes. Move your eyes up and down to see if the spots move. Usually, they are harmless and go away on their own.

Safety & Precautions

SAFE monitoring. CAUTION: Sudden increase in floaters is an emergency.

When to See Doctor

IMMEDIATELY: If you see many new floaters, flashes of light, or a shadow in your vision.

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Vision Loss (Sudden)First Aid & Emergency · FA/EUrgent information
This entry includes urgent or emergency precautions. Read the original Safety and Medical Help information below. In an emergency, contact local emergency services.
First Aid Approach

Protect Eye & Emergency Transport

Preparation & Use

Do not rub or apply pressure to the eye. Keep the person calm and seated. Do not let them drive. Cover the eye loosely with a clean shield or cup if there was trauma.

Safety & Precautions

EMERGENCY: Sudden vision loss can be a sign of stroke or retinal detachment.

When to Seek Medical Help

IMMEDIATELY: Go to the nearest emergency room or eye hospital immediately.

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Vision Loss with Eye PainCommon Symptoms · Eye HealthUrgent information
This entry includes urgent or emergency precautions. Read the original Safety and Medical Help information below. In an emergency, contact local emergency services.
Recommended Care

Immediate Eye Specialist Visit

Preparation & Use

Do not wait. Go to an eye hospital immediately. This is an emergency.

Safety & Precautions

EMERGENCY: Can cause permanent blindness.

When to See Doctor

IMMEDIATELY: As soon as symptoms start.

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Vision Loss with HeadacheCommon Symptoms · NeurologicalUrgent information
This entry includes urgent or emergency precautions. Read the original Safety and Medical Help information below. In an emergency, contact local emergency services.
Recommended Care

Immediate Hospital Visit

Preparation & Use

Do not drive. Go to the emergency room immediately. This is a medical emergency.

Safety & Precautions

EMERGENCY: Could be a stroke or severe eye nerve issue.

When to See Doctor

IMMEDIATELY: As soon as vision loss occurs with a headache.

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Vision Screening (Infant/Toddler)Wellness, Mother & Child · WMC
Care Approach

Routine Pediatric Checks

Guidance & Use

The pediatrician will check for a red reflex (a red glow in the pupil when light is shined into the eye, indicating a healthy retina) and track the baby's ability to follow objects with their eyes during well-child visits.

Safety & Precautions

SAFE preventive care. Early detection of vision issues is critical for normal brain development.

When to Seek Medical Advice

If you notice the baby's eyes crossing consistently after 4 months, or if their pupils appear white in photographs.

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Vitamin B9 (Folate) TestDiagnostics & Lab Reports · Blood Test
Test Purpose & Procedure

Measures folate (a B vitamin essential for making red blood cells and DNA, especially important during pregnancy). Fasting for 8 hours is usually recommended. A standard blood draw is performed.

Safety & Precautions

SAFE routine test.

When to Seek Medical Advice

If levels are low, consult your doctor to address anemia, fatigue, or to adjust prenatal vitamin supplementation.

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Vitamin B12 TestDiagnostics & Lab Reports · Blood Test
Test Purpose & Procedure

Measures Vitamin B12 (a nutrient that helps keep the body's nerve and blood cells healthy and helps make DNA). Fasting is usually not required, but some labs prefer it. A standard blood draw is performed.

Safety & Precautions

SAFE routine test.

When to Seek Medical Advice

If levels are low, consult your doctor to check for causes of anemia, fatigue, or nerve damage (neuropathy).

My Reading Checklist

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