According to the study, the infants' caretakers had used a common over-the-counter hair loss medication that contained 5% topical minoxidil. It is thought that the infants contracted minoxidil either through unintentional ingestion or skin contact. Adults suffering from age-related hair loss can purchase minoxidil, a drug authorized by the U.S. Food and Drug Administration (FDA), over-the-counter.
Interestingly, hypertrichosis, often known as "Werewolf Syndrome," is an uncommon disorder marked by profuse hair growth in odd places on the body. Fine hair up to 5 cm in length grows on the face, arms, and other body parts as a result of this disorder. Hypertrichosis does not yet have a cure. To control their symptoms, people with this illness must regularly use hair removal techniques including shaving and waxing.
In 2023, a prominent instance raised awareness of "werewolf syndrome" when a nursing baby's body began to get excessively hairy over two months. According to a health officials' inquiry, the father was treating androgenic alopecia with a topical 5% minoxidil solution.
When the minoxidil medication was stopped, the child's symptoms went away entirely. Similarly, once their caretakers stopped using minoxidil treatments, the newborns' excessive hair growth ended in all of the cases that were documented in Spain.
In another instance, a rare congenital type of hypertrichosis was identified in a two-year-old child in Malaysia. The girl's illness differed from those associated with minoxidil exposure in the environment.
Medical professionals have warned that minoxidil can be harmful to a baby's health and can cause hypertrichosis. The dangers of infant minoxidil exposure have also been brought to light by the european Pharmacovigilance Risk Assessment Committee.