Hypotrichosis simplex

Hypotrichosis simplex is a rare inherited condition that causes significant thinning and loss of hair across the scalp and sometimes the body. The word 'hypotrichosis' simply means having less hair than normal. Unlike many other hair loss conditions, hypotrichosis simplex is not caused by inflammation, scarring, or another underlying illness — the hair follicles themselves do not develop or function properly due to changes in certain genes. People with this condition are usually born with normal or near-normal hair, but noticeable hair thinning and loss begins in early childhood and gradually progresses over time. In some forms, hair loss is limited to the scalp, while in others it can also affect eyebrows, eyelashes, and body hair. Hypotrichosis simplex is sometimes called 'isolated hypotrichosis' because hair loss is the main or only feature — most people do not have other serious health problems linked to the condition. There are different subtypes depending on which gene is affected and how the condition is inherited. Some forms run in families in an autosomal dominant pattern (one changed copy of a gene is enough to cause the condition), while others follow an autosomal recessive pattern (two changed copies are needed). Currently, there is no cure for hypotrichosis simplex. Treatment focuses on managing the cosmetic and emotional impact of hair loss. Options include wigs, hairpieces, and general scalp care. Some people try medications used for other types of hair loss, such as minoxidil, though evidence for their effectiveness in this specific condition is limited. Psychological support and connecting with others who have the condition can be very helpful, especially for children and teenagers.

Bring these to your next appointment

• Q1.Which gene is most likely responsible for my (or my child's) hair loss, and should I have genetic testing?,Will the hair loss get worse over time, and how quickly might that happen?,Are there any treatments — even experimental ones — that might slow the hair loss?,Should other family members be tested, and what are the chances of passing this on to my children?,Can you refer me to a psychologist or counselor who has experience with rare skin and hair conditions?,Are there any patient support groups or communities you would recommend?,What scalp care routine would you suggest to keep my scalp healthy as hair loss progresses?

Common questions about Hypotrichosis simplex

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