asthenia
Let an agent explain asthenia as a symptom in general terms from clinical sources, describe common causes and assessment, distinguish asthenia from fatigue, muscle weakness and specific syndromes, and route personal concerns to clinicians.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain asthenia as a symptom in general terms from clinical sources, describe common causes and assessment, distinguish asthenia from fatigue, muscle weakness and specific syndromes, and route personal concerns to clinicians.
Abnormal physical weakness or lack of energy and strength, a symptom rather than a disease, ranging from generalised debility, adynamia and wasting as in marasmus to specific muscle weakness, and historically named as neurasthenia and cerebrasthenia for fatigue attributed to nervous exhaustion; asthenia accompanies infections, chronic illness, malnutrition, anaemia, endocrine and neurological disorders, depression and ageing, and needs assessment of its cause.
What it is for: Not applicable; a clinical sign.
It can be explain the symptom; relay causes and assessment; distinguish related concepts; route personal concerns.
Distinguishing features
Symptom not disease
Many causes
Generalised or focal
Historical concepts
What it looks like
Not a visible object; reduced strength and energy.
How it is recognised
Abnormal weakness or lack of energy
Generalised debility, adynamia, wasting, muscle weakness, historical neurasthenia and cerebrasthenia
Fatigue is tiredness; paralysis is loss of movement; frailty is an age-related syndrome
Related models
is a kind of - in registry terms
is a kind of - in registry terms
is a kind of - in registry terms
is distinguished from - as tiredness
In practice
Families and kinds
generalised asthenia and debility
muscle weakness from neuromuscular disease
wasting and marasmus from malnutrition
asthenia in infection and chronic illness
post-viral and chronic fatigue states
historical neurasthenia and cerebrasthenia
Identifiers
ICD-11 MG22 fatigue related terms
MeSH D001247 asthenia
Standards and regulation
Clinical guidelines on evaluating weakness and fatigue
Nutritional guidelines for marasmus
Failure modes and hazards
Missing serious causes such as neuromuscular disease or cancer
Agents giving personal medical advice
Confusing asthenia with fatigue or laziness
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Help Urgent signs first.
Safety.
Urgent
Urgent weakness.
Urgent
Urgent.
- Which forms of weakness, such as sudden, one-sided or with breathing difficulty, need emergency care? action
- Is the user describing such signs, which need emergency services now? boundary
Assessment
Assessment.
Assessment
Assessment.
- How do clinicians assess asthenia and find its cause, in general terms? provenance
- Is the user asking about their own weakness, which needs a clinician? boundary
Understand The symptom.
Clinical.
Definition
Definition.
Definition
Definition.
- What is asthenia, and how does it differ from fatigue, muscle weakness, paralysis and frailty? definition
- Is the question about the symptom or a specific disease? boundary
Causes
Causes.
Causes
Causes.
- What causes asthenia, from infection and anaemia to malnutrition, endocrine and neuromuscular disease? provenance
- Which entry fits the specific cause? action
Manage Management.
Clinical.
Treatment
Treatment.
Treatment
Treatment.
- How is asthenia managed by treating the cause, nutrition and rehabilitation, per guidelines? provenance
- Which references are standard? provenance
Chronic
Chronic fatigue states.
Chronic
Chronic.
- How are post-viral and chronic fatigue states understood, with research attributed? provenance
- Which sources are cited? provenance
Context History.
Context.
History
Neurasthenia and history.
History
History.
- What were neurasthenia and cerebrasthenia, and how did these concepts change? provenance
- Which entry fits neurasthenia? action
Nutrition
Marasmus.
Nutrition
Nutrition.
- What is marasmus, and how is severe malnutrition treated? provenance
- Which entry fits marasmus? action
What the second pass must settle
- Should muscle weakness and marasmus be separate primary entries?
- How should clinical guidelines be linked?
- The registry entry has merged aliases naming historical concepts; should they be split off?