Weakness
Understand possible causes, learn when to seek care, and find the right provider.
Overview
Weakness is a loss of muscle strength that makes everyday tasks harder. It can be general (whole body) or focal (one area).
Common causes include infection, dehydration, anemia, thyroid problems, low blood sugar, medication side effects, and stress.
Sudden weakness on one side of the body, with facial droop or trouble speaking, is a stroke emergency — call 911.
Quick Symptom Assessment
Answer a few questions to get more relevant provider recommendations.
This assessment is for informational purposes only and does not provide a medical diagnosis. If you're concerned about your symptoms, contact a healthcare provider. In an emergency, call 911.
Possible Causes
Common reasons people experience weakness. This list isn't exhaustive or a diagnosis.
Viral illness
Flu and other infections often cause temporary weakness and fatigue.
Anemia
Low red blood cells reduce oxygen delivery to muscles.
Thyroid disorder
Underactive thyroid can cause persistent weakness and tiredness.
Medication side effect
Some medications, including statins, can cause muscle weakness.
Neurological condition
Nerve or brain conditions can cause focal or progressive weakness.
Recommended Care
The right level of care depends on your symptoms. Here's where people with weakness usually start.
Primary Care
Best first stop for most non-emergency symptoms. Your primary care provider can evaluate, order tests, and refer you if needed.
Urgent Care
For symptoms that need attention today but aren't life-threatening. Faster than the ER for minor injuries and illnesses.
Telehealth
Talk to a provider from home. Convenient for mild symptoms, follow-ups, and quick guidance on next steps.
Emergency Room
Only if you have red-flag symptoms below. Call 911 or go to the nearest emergency room right away.
Find Care Near You
Verified Miami providers matched to weakness.
Top weakness centers in Miami
The standout, highly rated centers for weakness — verified providers first.
See all weakness centersWhen to Seek Immediate Care
Call 911 or go to the nearest emergency room if you experience any of the following:
- Sudden weakness on one side of the body
- Facial droop, slurred speech, or trouble understanding
- Loss of balance or coordination
- Weakness with chest pain or shortness of breath
- Rapidly worsening or spreading weakness
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