Hair Loss Classification

Hair loss is a progressive condition influenced by various factors like age, ethnicity, genetics, and medical conditions.

Planning for this inevitability throughout a patient's lifetime is crucial. This page aims to assist in estimating the required number of grafts for a hair transplant based on the patient's Norwood Class pattern of hair loss. This page aims to give a generalized idea of the grafts needed, but accurate number is determined by an experienced surgeon based on age, ethnicity, hair loss, medical conditions and hair characteristics.

The Norwood Classification system delineates different classes of hair loss, serving as a general guideline for determining the number of follicular unit grafts needed in a first hair transplant procedure.

Number of grafts in first transplant session

In the initial hair transplant session, several key objectives should be met:

  • Establishing or enhancing the frontal hairline to frame the face permanently.
  • Providing coverage to thinning or bald areas, extending at least to the vertex transition point.
  • Achieving sufficient density for natural-looking results, ensuring the procedure stands alone.
  • It's crucial to transplant the entire area needing coverage in the first session to expedite surgical restoration. Avoid dividing the process into sections or small sessions arbitrarily. While additional sessions may be needed in the future for fuller results or addressing future hair loss, it's essential to maximize outcomes in each session.

TOTAL Number of Grafts for Hair Restoration

The full results of a follicular unit hair transplant typically emerge within 10 to 12 months.

Consideration for a second session should only occur after the hair from the initial session has fully grown in.

Throughout the first year, changes in hair diameter, texture, and length can significantly impact the appearance of the restoration, affecting grooming preferences. Thus, decisions regarding additional graft placement should be made once the hair reaches styling length, allowing for optimal aesthetic judgments by both patient and physician.

Delaying a second session also allows for continued improvement in scalp laxity, making donor hair extraction easier.

Goals for the second transplant may involve increasing density in previously treated areas, refining the hairline further, addressing additional hair loss, and providing crown coverage if necessary.

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