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Hair loss

Hair loss: Introduction

Some amount of hair loss is normal every day. However, excessive hair loss or unusual hair thinning can be a symptom of a disease, and needs prompt professional medical diagnosis....more »

» Review Causes of Hair loss: Causes | Symptom Checker » | Assessment Questionnaire »

Causes of Hair loss:

The following medical conditions are some of the possible causes of Hair loss. There are likely to be other possible causes, so ask your doctor about your symptoms.

» Review Causes of Hair loss: Causes | Symptom Checker » | Assessment Questionnaire »

Causes of Types of Hair loss:

Review the causes of these more specific types of Hair loss:

Review causes of types of Hair loss in more specific categories:

Hair loss: Symptom Checker

Listed below are some combinations of symptoms associated with Hair loss, as listed in our database. Visit the Symptom Checker, to add and remove symptoms and research your condition.

Symptom Checker

Symptom Checker

Hair loss Treatments

Some of the possible treatments listed in sources for treatment of Hair loss may include:

Review further information on Hair loss Treatments.

Alternative Treatments for Hair loss

Alternative treatments or home remedies that have been listed as possibly helpful for Hair loss may include:

Stories from Users for Hair loss

Real-life user stories relating to Hair loss:

Message Boards for Hair loss

Symptom specific forums: The following patient stories in our interactive forums and message boards relate to Hair loss or relevant symptoms:

Diagnostic tests for Hair loss:

Various tests are used in the diagnosis of Hair loss. Some of these are listed below :

  • Physical examination
    • Determine the pattern of hair loss - e.g. male pattern balding, focal alopecia areata (localized loss of hair in round or oval areas without any visible inflammation of the skin in hair bearing areas), alopecia totalis (loss of all scalp hair and eyebrows, alopecia universalis (the end stage of alopecia areata with complete loss of all body hair).
    • Examine area of skin where there is hair loss to determine if there is a skin rash, skin inflammation or skin scarring
    • Examine nails. If alopecia areata- type hair loss and nails are also affected, this suggests poor prognostic chance of hair re-growth
  • more tests...»

Hair loss: Animations


Medications or substances causing Hair loss:

The following drugs, medications, substances or toxins are some of the possible causes of Hair loss 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.

Drug interactions causing Hair loss:

When combined, certain drugs, medications, substances or toxins may react causing Hair loss 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.

Hair loss: Comorbid Symptoms

Some of the comorbid or associated medical symptoms for Hair loss may include these symptoms:

Causes of General Symptom Types

Research the causes of these more general types of symptom:

Research the causes of related medical symptoms such as:

Causes of Similar Symptoms to Hair loss

Research the causes of these symptoms that are similar to, or related to, the symptom Hair loss:

Assessment Questionnaire: Questions your doctor may ask (and why!)

During a consultation, your doctor will use various techniques to assess the symptom: Hair loss. 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 Hair loss Assessment Questionnaire (16 listings)

Hair loss: Deaths

Read more about causes and Hair loss deaths.

Misdiagnosis and Hair loss

Rare form of hair loss often misdiagnosed: a rare form of extreme hair loss called "Atrichia with papular lesions" (APL) is often misdiagnosed as alopecia totalis. Researchers estimate that about 1 per 100 diagnoses of alopecia totalis are incorrect. See more »

Hair and scalp disorders misdiagnosed in African Americans: A higher than average percentage of misdiagnoses of hair or scalp disorders seem to occur in African Americans. Some of the overlooked hair/scalp conditions include cicatrial alopecia, more »

Hair loss: Research Related Doctors & Specialists

Other ways to find a doctor, or use doctor, physician and specialist online research services:

Causes of Hair loss listed in Disease Database:

Other medical conditions listed in the Disease Database as possible causes of Hair loss as a symptom include:

Definitions of Hair loss:

Baldness; absence of hair from skin areas where it is normally present.
- (Source - Diseases Database)

Organs affected by Hair loss:

The list of organs typically affected by Hair loss may include, but is not limited to:

Detailed list of causes of Hair loss

The list below shows some of the causes of Hair loss mentioned in various sources:

How Common are these Causes of Hair loss?

This information refers to the general prevalence and incidence of these diseases, not to how likely they are to be the actual cause of Hair loss. Of the 563 causes of Hair loss that we have listed, we have the following prevalence/incidence information:

  • 4 causes are "very common" diseases
  • 16 causes are "common" diseases
  • 6 causes are "uncommon" diseases
  • 2 causes are "rare" diseases
  • 5 causes are "very rare" diseases
  • 549 causes have no prevalence information.

Conditions listing medical symptoms: Hair loss:

The following list of conditions have 'Hair loss' 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 Hair loss or choose View All.

View All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #




























Conditions listing medical complications: Hair loss:

The following list of medical conditions have Hair loss 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.





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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.

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Causes of Hair loss Based on Risk Factors

This information shows analysis of the list of causes of Hair loss based on whether certain risk factors apply to the patient:

  • Travel - has the patient travelled recently?
  • Diabetes - history of diabetes or family history of diabetes?

    Doctors and specialists: Who should I consult about Hair loss?

    Depending on the seriousness of the onset of Hair loss, you may want to consult one of the following medical professionals.

    Important:In extreme cases, always seek advice from emergency services :

    What are the alternative names for Hair loss:

    Hypotrichosis, Alopecia, Atrichia, Bald, Balding, Baldness
    - (Source - Diseases Database)

    Classifications of Hair loss:

    Subtypes of Hair loss:

    Baldness (517 causes), Loss of eyelashes (11 causes), Temporary hair loss (17 causes), Patchy hair loss (17 causes), Thinning hair (29 causes), Hair thinning (16 causes), Pubic hair loss (13 causes), Reversible alopecia (7 causes), Thin hair (44 causes), Male-pattern baldness (9 causes), Bald (77 causes)

    Medical Conditions associated with Hair loss:

    Hair symptoms (838 causes), Baldness (517 causes), Head symptoms (10192 causes), Face symptoms (8109 causes), Scalp symptoms (639 causes)

    Symptoms related to Hair loss:

    Graying (11 causes), Hairiness (189 causes), Hair symptoms (838 causes), Hormonal imbalance, Androgens, Oestrogens, Drug side effect, Chemotherapy

    Medical articles on signs and symptoms:

    Doctor-patient articles related to symptoms and diagnosis:

    These general medical articles may be of interest:

    Medical News summaries about Hair loss

    Our news pages contain the following medical news summaries about Hair loss and many other medical conditions:

    Evidence Based Medicine Research for Hair loss

    Medical research papers related to Hair loss include:

    Research More Evidence-Based Medicine at

    Related medical articles from our Disease Center for Hair loss:

    More Ways To Research Medical Signs and Symptoms:


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