Biomedical Engineering Reference
In-Depth Information
Because the hairs were fi ne and lighter, treatment was performed with a 3-ms, 755-nm GentleLase alexandrite laser (40 J/cm
2
,
8-mm spot, 30/30 DCD cooling). Six months after treatment, a very satisfactory result was obtained, as shown in Figure 5.7B.
(
B
)
(
A
)
Figure 5.7
(
A
) Patient with hypertrichosis over spina bifida occulta area on lower back; (
B
) result at 6 months after sixth laser hair removal treatment.
Case 5
Three years earlier, a 42-year-old male patient was victim of a burn injury. His burn wounds healed with conventional wound
care, causing scarring in his beard area. Since then a problem of recurrent ingrowing hairs occurred, which caused deep fol-
liculitis (Fig. 5.8A). Because the hairs were coarse and dark, he was treated with an 800-nm LightSheer laser, at 30-35 J/cm
2
,
30 ms and a 12 × 12 mm spot. After seven treatments, the ingrowing hairs were removed and the problem of recurrent
deep folliculitis improved substantially. We also noted a pronounced, textural improvement of the scarred skin after diode
treatment (Fig. 5.8B).
(
A
)
(
B
)
Figure 5.8
(
A
) Patient with recurrent folliculitis due to burn scars. (
B
) Result after seventh laser hair removal treatment with substantial improvement of skin
texture.
Case 6
This 56-year-old female patient was diagnosed with a hairy nevus of Becker of her left hand (Fig. 5.9A). The presence of dark,
terminal hairs in the brown pigmented plaque, was of great cosmetic concern to her. She received treatment with an 800-nm
LightSheer laser, at 40 J/cm
2
, 30 ms and a 12 × 12 mm spot. After three treatments, there was a signifi cant reduction in
the number of regrowing hairs (Fig. 5.9B). The patient was satisfi ed with this result and requested no further treatments.
Note also that the hyperpigmented plaque remained unchanged despite laser treatment.
