L60-L75: Disorders of skin appendages

L73: Other follicular disorders

Other follicular disorders, as classified under the code L73 in the ICD-10 WHO 2016 classification, constitute a range of conditions that predominantly involve anomalies of the hair follicles. These conditions typically originate from the follicles, the small skin cavities from which hairs grow. Factors such as hormonal imbalances, infections, or autoimmune reactions may trigger these disorders. Common symptoms across this group include skin abnormalities like bumps, pimples, redness, and changes in hair growth patterns - either excessive hair or loss of hair. Over time, if not properly managed, these disorders can progress and lead to cosmetic concerns and potential complications such as skin infections. Notably, conditions under this classification commonly affect the skin but can also impact one's psychological wellbeing due to changes in physical appearance. The conditions are generally non-contagious, meaning they are not spread from person to person.