Appendages of the Skin Appendages of the Skin &&

Imbalances of the SkinImbalances of the Skin

HairHair

Purpose of Hair Purpose of Hair Guards the head against bumpsGuards the head against bumps Shields the eyesShields the eyes Thermal Regulation (you loose a lot of heat Thermal Regulation (you loose a lot of heat

from your head!)from your head!) Protect the mucous membranes in the Protect the mucous membranes in the

respiratory tract. respiratory tract.

Hair is produced by the hair follicleHair is produced by the hair follicle Hair is an epithelial structure.Hair is an epithelial structure.

It originates in the Stratum BasalIt originates in the Stratum Basal As the hair cells are pushed upwards, they As the hair cells are pushed upwards, they

keratinize and die.keratinize and die.

Finger NailsFinger Nails

A nail is a scale-like modification of the A nail is a scale-like modification of the skin. It originates from the Stratum Basalskin. It originates from the Stratum Basal

Every nail has:Every nail has: A free edgeA free edge

A bodyA body

A rootA root

And nail folds ( cuticle)And nail folds ( cuticle)

Skin ImbalancesSkin Imbalances Athletes Foot (tinea pedis)Athletes Foot (tinea pedis)

Fungal infection of the skin between toesFungal infection of the skin between toes

Boils – inflammation of the hair follicle and Boils – inflammation of the hair follicle and sebaceous glands. Common on necksebaceous glands. Common on neck

Cold Sore – Small fluid filled blister caused Cold Sore – Small fluid filled blister caused by herpes simplex. Virus localizes in a by herpes simplex. Virus localizes in a nerve and remains dormant until activated nerve and remains dormant until activated by stress, fever or UV radiationby stress, fever or UV radiation

Contact Dermatitus – Allergic response to Contact Dermatitus – Allergic response to a chemical (poison ivy)a chemical (poison ivy)

Impetigo – Pink inflammation that become Impetigo – Pink inflammation that become yellow and crusty and eventually burst. yellow and crusty and eventually burst. Very contagious!Very contagious!

Psoriasis – A chronic condition Psoriasis – A chronic condition characterized by redness and silvery characterized by redness and silvery scales. Can be disfiguring. Cause is scales. Can be disfiguring. Cause is unknown. May be genetic or stress unknown. May be genetic or stress relatedrelated

Ring worm – a fungal infection of the skin. Ring worm – a fungal infection of the skin. Very contagious!Very contagious!