There are many different causes of hair loss. These are, in decreasing frequency, as follows;
• Male Pattern Hair Loss (Androgenetic alopecia)
The frequency of this type of hair loss is not fully recorded, but its frequency in white people is close to 100%. You will find all the general information about male pattern hair loss on our site.
• Diffuse alopecia
Diffuse alopecia is generalized or global hair loss that spreads over the entire scalp. It is usually not noticed until there is serious hair loss. The course of diffuse alopecia is variable and can be continuous or increasing from time to time, depending on the cause.
• Alopecia areata
Alopecia areata occurs as small circular patches with distinct borders without any symptoms. Sometimes it progresses with the loss of all scalp hair, or even all body hair. Apart from these, it is defined as a disease that does not form scar tissue, is reversible, and has no age, gender or race preference.
• Cicatricial alopecia
Cicatricial alopecia is caused by the permanent destruction and fibrosis (scar tissue formation) of hair follicles. It usually occurs in a circular shape, but can also be widespread.
• Traumatic alopecia
Traction (due to pulling) or traumatic alopecias are caused by various types of physical and chemical injuries and can be acute or chronic.
• Infections and infestations
Here, hair loss is directly or indirectly caused by various microorganisms (fungi, bacteria or viruses) and lice, or by the destruction of the hair shaft or the dysfunction of the hair follicles. This type of hair loss is specifically evaluated according to the causative agent.
• Hair shaft abnormalities causing alopecia
Structural abnormalities of the hair shaft are examined in four groups: fractures, irregularities, curling or spiraling, and foreign substances affecting the hair shaft.
• Hereditary and congenital alopecia
This type of hair loss is caused by various hereditary diseases or diseases or complications related to pregnancy and birth.
• Alopecia due to various causes
Various chronic skin diseases such as psoriasis can also affect the scalp.
Other types of hair loss are generally temporary and are caused by various factors. Examples of these include stress, thyroid disorders, zinc and iron deficiencies, infections, surgery with general anesthesia, diabetes, excessive doses of vitamin A, and treatments with various drugs, especially chemotherapy.