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Alopecia universalis (AU), also known as alopecia areata universalis, is a medical condition involving the loss of all body hair, including eyebrows, eyelashes, chest hair, armpit hair, and pubic hair. It is the most severe form of alopecia areata (AA). [1]
The hair is often light-coloured, brittle, and slow-growing. This condition is also characterized by absent teeth or teeth that are malformed. Hypohidrotic ectodermal dysplasia is the most common form of ectodermal dysplasia in humans. It is estimated to affect at least 1 in 17,000 people worldwide. [citation needed]
Individuals with Ectodermal Dysplasia (ED) commonly experience sparse or absent hair, a condition known as hypotrichosis. Scalp hair is typically fine, brittle, and may lack pigmentation, appearing light or wispy. Eyebrows and eyelashes may also be sparse or absent, contributing to the distinct facial appearance seen in ED.
In many patients, hair loss and regrowth occurs simultaneously over the course of several years. [7] Among those in whom all body hair is lost, fewer than 10% recover. [18] About 0.15% of people are affected at any one time, and 2% of people are affected at some point in time. [7] [18] Onset is usually in childhood. [7]
A clinician grabs sections of hair and observes for active hair loss. A positive pull test is usually caused by telogen effluvium, androgenetic alopecia, and alopecia areata. [10] Tug Test. A doctor holds the top and bottom of a strand of hair and observes for a break in the middle which may be caused by a hair shaft abnormality. [10] Card Test
Hair diseases are illnesses that impact the persistence and regular growth of hair. Types of hair diseases include folliculitis , hirsutism , hypertrichosis , hypotrichosis ( alopecia ), Menkes kinky hair syndrome , monilethrix , and piedra .
Seborrheic dermatitis is a form of eczema that affects more than 10 million people and causes flakiness, itching, irritation, and in rare instances, hair loss. Here's what you need to know.
ICD-10 is the 10th revision of the International Classification of Diseases (ICD), a medical classification list by the World Health Organization (WHO). It contains codes for diseases, signs and symptoms, abnormal findings, complaints, social circumstances, and external causes of injury or diseases. [1]