What should you know about a scalp tissue expander?

A scalp tissue expander is an implant gradually filled to create additional skin for reconstructive surgery after scalp tissue loss. It may be considered when an area is too large or tight to close directly. The surgical team chooses its position and filling schedule according to the scalp defect, skin quality, hair-bearing areas, and planned reconstruction.

The expander is placed beneath scalp skin during surgery. At follow-up visits, the team adds fluid through a filling port, allowing the covering skin to stretch over time. A feeling of tightness or pressure can occur after filling, but marked pain, colour change, or skin breakdown needs assessment.

Once enough skin has developed, another operation may remove the expander and use the expanded tissue to cover the area. The plan may also involve grafting or other reconstructive methods. Healing, scar position, hair direction, and the need for further procedures are individual considerations.

Keep the incision and port area clean and follow dressing instructions. Avoid pressure, rubbing, hair products, or activities that could injure the scalp until the surgeon permits them. Attend every filling visit and describe pressure, numbness, headache, drainage, or changes in the skin before the next expansion.

Bring a list of medicines and tell the team about previous radiation, infection, diabetes, smoking, or treatments that affect healing. Ask how to sleep comfortably, wash your hair, protect the area from sun, and plan work or school while the expander is in place.

Call the surgical team promptly for increasing redness, warmth, swelling, drainage, wound separation, fever, worsening pain, or a sudden change in the expander’s shape. Seek urgent care for severe headache, confusion, heavy bleeding, or rapidly spreading swelling. Do not try to adjust or drain the device yourself.

Ask how long expansion may take, what each filling feels like, how the port is protected, which activities are restricted, what the next operation involves, and how hair-bearing or scarred skin may affect the result.