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Welcome to AKASI Calculator!

AKASI is a medical device intended for use by healthcare professionals to assess AK severity on the head.

The information contained in this web is directed exclusively at qualified healthcare professionals (HCP).

This web is not intended for any data collection purposes.

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I AM HCP

POLICHEM S.A., Via Angelo Maspoli 11 – 6850 Mendrisio, Switzerland
Polichem S.A. is an Almirall company
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  • SCALP
  • FOREHEAD
  • LEFT FACE
  • RIGHT FACE
Area extent
AK Distribution
Erythema
Thickness
Area extent
  • Unaffected area
  • 1
    1-9%
  • 2
    10-29%
  • 3
    30-49%
  • 4
    50-69%
  • 5
    70-89%
  • 6
    90-100%
AK Distribution
  • 0
    None
  • 1
    Isolated or scattered
  • 2
    Clustered
  • 3
    Clustered and confluent
  • 4
    All confluent
Erythema
  • 0
    None
  • 1
    Slight
  • 2
    Moderate
  • 3
    Intense
  • 4
    Very intense
Thickness
  • 0
    No palpability
  • 1
    Just palpable
  • 2
    Clearly palpable
  • 3
    Thickened
  • 4
    Very thickened
Area extent
  • Unaffected area
  • 1
    1-9%
  • 2
    10-29%
  • 3
    30-49%
  • 4
    50-69%
  • 5
    70-89%
  • 6
    90-100%
AK Distribution
  • 0
    None
  • 1
    Isolated or scattered
  • 2
    Clustered
  • 3
    Clustered and confluent
  • 4
    All confluent
Erythema
  • 0
    None
  • 1
    Slight
  • 2
    Moderate
  • 3
    Intense
  • 4
    Very intense
Thickness
  • 0
    No palpability
  • 1
    Just palpable
  • 2
    Clearly palpable
  • 3
    Thickened
  • 4
    Very thickened
Area extent
  • Unaffected area
  • 1
    1-9%
  • 2
    10-29%
  • 3
    30-49%
  • 4
    50-69%
  • 5
    70-89%
  • 6
    90-100%
AK Distribution
  • 0
    None
  • 1
    Isolated or scattered
  • 2
    Clustered
  • 3
    Clustered and confluent
  • 4
    All confluent
Erythema
  • 0
    None
  • 1
    Slight
  • 2
    Moderate
  • 3
    Intense
  • 4
    Very intense
Thickness
  • 0
    No palpability
  • 1
    Just palpable
  • 2
    Clearly palpable
  • 3
    Thickened
  • 4
    Very thickened
Area extent
  • Unaffected area
  • 1
    1-9%
  • 2
    10-29%
  • 3
    30-49%
  • 4
    50-69%
  • 5
    70-89%
  • 6
    90-100%
AK Distribution
  • 0
    None
  • 1
    Isolated or scattered
  • 2
    Clustered
  • 3
    Clustered and confluent
  • 4
    All confluent
Erythema
  • 0
    None
  • 1
    Slight
  • 2
    Moderate
  • 3
    Intense
  • 4
    Very intense
Thickness
  • 0
    No palpability
  • 1
    Just palpable
  • 2
    Clearly palpable
  • 3
    Thickened
  • 4
    Very thickened
TOTAL AKASI SCORE
0
18
AKASI SUBSCORES
SCALP
0
FOREHEAD
0
LEFTFACE
0
RIGHTFACE
0
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Info

PARAMETER

Extent of sun-damaged skin

DESCRIPTION

Evaluation of sun-damage extent, considering skin alteration characteristic of field cancerization. Squamous cell carcinoma, seborrheic keratosis, solar lentigo are excluded.

Score

0% 1-9% 10-29% 30-49% 50-69% 70-89% 90-100%
0 1 2 3 4 5 6

PARAMETER

Ak Distribution

NONE

No clinical AKs

Score
0

ISOLATED OR
SCATTERED

Isolated or scattered AKs surrounded by apparently normal-looking skin

Score
1

CLUSTERED

Several isolated AKs confined to small clusters up to 25 cm 2

Score
2

CLUSTERED AND
CONFLUENT

AKs inside the cluster (up to 25 cm 2 ) are coalescing

Score
3

ALL CONFLUENT

Lesions coalescing and not clearly distinguishable across large sun-affected area

Score
4

PARAMETER

Erythema

NONE

No erythema


Score
0
SLIGHT

Light red


Score
1
MODERATE

Red, but not deep red


Score
2
INTENSE

Very red


Score
3
VERY INTENSE

Extremely red


Score
4

PARAMETER

Thickness

NO PALPABILITY

Not detectable by touch


Score
0
JUST PALPABLE

Just noticeable by touch


Score
1
CLEARLY PALPABLE

Easy to detect by touch


Score
2
THICKENED

Thick and hyperkeratotic


Score
3
VERY THICKENED

Very thick and hyperkeratotic


Score
4
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COEFFICIENT
-
Calculation method
Score Scalp Forehead Left cheek, ear, chin and nose Right cheek, ear, chin and nose
D (Distribution) 3 3 1 1
E (Erythema) 2 2 2 2
T (Thickness) 2 3 2 2
Sum of D + E + T 7 8 5 6
% of affected area 35% 25% 15% 20%
Area score 3 2 2 2
Subtotal (Sum of D + E + T + Area score) 10 10 7 8
Area coefficient x0.4 x0.2 x0.2 x0.2
AKASI Subscore 4.0 2.0 1.4 1.6
Total AKASI Score 9.0
Total score range from 0 to 18
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