Skin and self-injury: a possible link between peripheral innervation and immune function?

Area of Science:

• Neuroscience
• Pediatrics
• Dermatology

Background:

• Investigating epidermal innervation in pediatric patients with neurological impairment and self-injurious behavior.
• Utilizing archival skin specimens from affected children and age-matched healthy controls.

Observation:

• Assessing epidermal nerve fiber density, peptide content, and mast cell degranulation in non-damaged skin.
• Comparing these markers between pediatric patients with self-injury and typically developing children.

Findings:

• Male patients exhibited significantly increased epidermal nerve fiber densities.
• Elevated substance P positive fiber counts and extensive mast cell degranulation were observed in affected males.
• This study is the first to report altered peripheral innervation in non-damaged skin of children with self-injury and developmental disability.

Implications:

• Altered peripheral innervation may be a key factor in self-injurious behavior associated with neurological impairment.
• Peripheral nociceptive and immune modulatory neural pathways warrant further investigation.
• Understanding these pathways could lead to novel therapeutic strategies for neurobehavioral disorders.