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Lethargy is a fairly imprecise description of the feeling or slowness, sluggishness, tiredness, or lack of energy. Lethargy in common usage may mean many things, including fatigue, drowsiness (sleepiness), lethargy, tiredness, malaise, listlessness, or weakness (including muscular weakness). The causes of these other similar symptoms also need to be investigated in researching a symptom of lethargy. Nevertheless, any type of lethargy symptom can indicate a serious medical condition and needs prompt medical investigation....more »
» Review Causes of Lethargy: Causes | Symptom Checker » | Assessment Questionnaire »
The following medical conditions are some of the possible
causes of Lethargy.
There are likely to be other possible causes, so ask your doctor
about your symptoms.
See full list of 399 causes of Lethargy
» Review Causes of Lethargy: Causes | Symptom Checker » | Assessment Questionnaire »
Home medical tests possibly related to Lethargy:
Review causes of types of Lethargy in more specific categories:
Review causes of more specific types of Lethargy:
See full list of 6 types for Lethargy
Listed below are some combinations of symptoms associated with Lethargy, as listed in our database. Visit the Symptom Checker, to add and remove symptoms and research your condition.
See full list of 501 Symptom Checkers for Lethargy
Some of the possible treatments listed in sources for treatment of Lethargy may include:
Review further information on Lethargy Treatments.
Real-life user stories relating to Lethargy:
Symptom specific forums: The following patient stories in our interactive forums and message boards relate to Lethargy or relevant symptoms:
Various tests are used in the diagnosis of Lethargy. Some of these are listed below :
See full list of 47
diagnostic tests for Lethargy
More Lethargy animations & videos
The following drugs, medications, substances or toxins are some of the possible
causes of Lethargy as a symptom.
Always advise your doctor of any medications or treatments you are using,
including prescription, over-the-counter, supplements, herbal or alternative treatments.
See full list of 146
medications causing Lethargy
When combined, certain drugs, medications, substances or toxins may react causing Lethargy as a symptom. Always advise your doctor of any medications or treatments you are using, including prescription, over-the-counter, supplements, herbal or alternative treatments.
See full list of 375 drug interactions causing Lethargy
Some of the comorbid or associated medical symptoms for Lethargy may include these symptoms:
See all associated comorbid symptoms for Lethargy
Research the causes of these more general types of symptom:
Research the causes of these symptoms that are similar to, or related to, the symptom Lethargy:
During a consultation, your doctor will use various techniques to assess the symptom: Lethargy. These will include a physical examination and possibly diagnostic tests. (Note: A physical exam is always done, diagnostic tests may or may not be performed depending on the suspected condition) Your doctor will ask several questions when assessing your condition. It is important to openly share any pertinent information to help your doctor make an accurate diagnosis.
It is also very important to bring an up-to-date list of all of your all medical conditions, medications including dosages, and names of numbers of any specialist you see.
Create your printable checklist here.
See Lethargy Assessment Questionnaire (32 listings)
Read more about causes and Lethargy deaths.
Cluster of diseases with difficult diagnosis issues: There is a well-known list of medical conditions that are all somewhat difficult to diagnose, and all can present in a variety of different severities. Diseases in...read more »
RLS sleep disorder causing night-time leg sensations often misdiagnosed: A common but relatively unknown sleep-related disorder called Restless Leg Syndrome (RLS) is often misdiagnosed. The typical symptoms are night-time tingling, crawling, or burning sensations...read more »
Pituitary conditions often undiagnosed cause of symptoms: There are a variety of symptoms that can be caused by a pituitary disorder (see symptoms of pituitary disorders). For example, fatigue, headache, weight gain, diabetes...read more »
Read more about Misdiagnosis and Lethargy
Other ways to find a doctor, or use doctor, physician and specialist online research services:
Conditions that are commonly undiagnosed in related areas may include:
The list of organs typically affected by Lethargy may include, but is not limited to:
The list below shows some of the causes of Lethargy mentioned in various sources:
See full list of 399 causes of Lethargy
This information refers to the general prevalence and incidence of these diseases, not to how likely they are to be the actual cause of Lethargy. Of the 399 causes of Lethargy that we have listed, we have the following prevalence/incidence information:
See the analysis of the prevalence of 399 causes of Lethargy
The following list of conditions have 'Lethargy' or similar listed as a symptom in our database. This computer-generated list may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.
Select from the following alphabetical view of conditions which include a symptom of Lethargy or choose View All.
The following list of medical conditions have Lethargy or similar listed as a medical complication in our database. The distinction between a symptom and complication is not always clear, and conditions mentioning this symptom as a complication may also be relevant. This computer-generated list may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.
Ask or answer a question about symptoms or diseases at one of our free interactive user forums.
Medical story forums: If you have a medical story then we want to hear it.
See a list of all the medical forums
This information shows analysis of the list of causes of Lethargy based
on whether certain risk factors apply to the patient:
Depending on the seriousness of the onset of Lethargy, you may want to consult one of the following medical professionals.
Important:In extreme cases, always seek advice from emergency services :
Medical Conditions associated with Lethargy:
Fatigue (3235 causes), Muscle weakness (4300 causes), Common symptoms (8589 causes), Sick (5751 causes), Fatigue symptoms (3235 causes), Energy symptoms (3108 causes), Pain (6458 causes), Movement symptoms (6001 causes), Weakness (3752 causes), Sensations (6520 causes), Brain symptoms (2787 causes), Neurological symptoms (9575 causes), Sensory symptoms (7134 causes), Muscle symptoms (7251 causes), Nerve symptoms (9132 causes), Musculoskeletal symptoms (6264 causes), Body symptoms (5672 causes), Head symptoms (10192 causes)
Symptoms related to Lethargy:
Fatigue (3235 causes), Malaise (468 causes), Drowsiness (1139 causes), Prostration (65 causes), Listlessness (33 causes), Weakness (3752 causes), Tired (669 causes), Sleepiness (1139 causes), Insomnia (521 causes), Chronic fatigue syndrome (3 causes), Depression (629 causes), Dementia (394 causes), Renal failure (115 causes), Cirrhosis of liver (119 causes), Temporal lobe abscess, Alzheimer's disease (2 causes), Cocaine abuse (2 causes), Carbon monoxide poisoning, Huntington's disease (2 causes)
Doctor-patient articles related to symptoms and diagnosis:
These general medical articles may be of interest:
See full list of premium articles on symptoms and diagnosis
Our news pages contain the following medical news summaries about Lethargy and many other medical conditions:
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