1.Skin Anatomy & Lesion***
Protocols
Skin Anatomy:
Three layers of tissue make up the skin:
- Epidermis, the top layer.
- Dermis, the middle layer.
- Hypodermis, the bottom or fatty layer.
Clinical Examination of skin diseases:
Primary Skin Lesion:
♻️Flat lesions:
🛑MACULE - A circumscribed, flat area
of discoloration
that is less
then 10 mm in diameter.
🛑PATCH - A circumscribed, flat area of
discoloration that
is >10 mm
in diameter.
♻️Raised lesions:
🛑PAPULE - A circumscribed, elevated,
solid lesion that
is less than
10 mm in diameter.
🛑PLAQUE - A circumscribed, elevated,
solid lesion
that is
greater than 10 mm in diameter and is usually
broader than
it is thick.
🛑NODULE - A palpable, solid lesion
that is greater than
10 mm in
diameter.
🛑WHEAL - Transient, circumscribed,
edematous
papules or
plaques caused by swelling in the dermis
♻️ Fluid-filled lesions:
🛑VESICLE - A small, superficial,
circumscribed blister
that is less
then 10 mm in diameter and is fluid filled.
🛑BULLA - A large, raised,
circumscribed blister that is
> 10 mm
in diameter and is fluid filled.
🛑PUSTULE - A purulent (pus filled)
vesicle. Pustules are
filled with
neutrophils and may be white or yellow.
♻️Vascular lesions:
🛑ECCHYMOSIS-Nonblanching, purpuric
macules
or patches
greater than 10 mm in diameter due to
extravasated blood in the skin.
🛑PURPURA - Bleeding into the skin
measuring 3-10mm.
🛑PETECHIAE - Bleeding into the skin
measuring 1-
to 2-mm
(pinpoint to pinhead size) nonblanchable
purpuric
macules resulting from the rupture of small
blood
vessels.
Common skin Rash:
Causes of skin pruritus:
Potency of steroid :
Dermatological product Preparation
