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How is alopecia areata diagnosed?

19 October 2021


How is alopecia areata diagnosed?- Clinica de Freitas

Alopecia areata is a type of telogen alopecia characterized by round bald patches and is recognized as a benign disease. 

How is alopecia areata diagnosed?

In our hair clinic alopecia areata is diagnosed through a medical history and a hair analysis. 

The diagnosis is more accurate when we visualize the images collected by digital dermatoscopy, thanks to this process we can identify the causes of hair loss.

When a diagnosis of alopecia areata is made we identify 2 phases:

  • Early phase: Numerous miniaturized hair follicles are observed and in a telogen phase cycle. 
  • Late phase: Alopecia areata, most of the hair follicles are in catagen and telogen. 

It is very important to perform a thorough examination to be able to identify the course of the disease and to be able to provide the patient with a staged treatment alternating drugs and treatments if necessary.

Our trichologist follows the following guidelines for the correct diagnosis of hair loss:  

If the trichologist does not identify the causes or these are not completely clear, the appropriate tests will be performed to identify a possible disease that is the cause of hair loss. The tests performed may be the following:

  • Hair analysis (hair and scalp).
  • Blood tests

What types of alopecia areata can be diagnosed?

Diffuse alopecia areata

Patients report aggravation with stress. When repopulation occurs, the hair may be fine and hypopigmented at first and later regain its baseline characteristics, although sometimes the hair texture may persist slightly different than before the disease.

Alopecia areata for dark hair

This is an unusual presentation and is characterized by the disease sparing non-pigmented or gray hair, with only normal colored hair being lost.

Alopecia areata in single plaque

It usually presents as a single affected area on the scalp and of a smaller size. This is the most common manifestation.

Multiple plaque alopecia areata

Several bald areas on the head that over time may join together to form a single, larger area. 

Total alopecia areata

Hair loss affects the entire scalp, resulting in complete baldness.

Alopecia areata universal

It is the loss of all the hair on the body surface.

A timely diagnosis can help the effectiveness of treatment and reverse alopecia, do not wait any longer because you are still in time to make an appointment for a hair diagnosis.