Homeostatic Imbalance of the Skin

 The
skin can develop over 1000 ailments
 Most disorders result from allergies or
bacterial, viral, or fungal infections
 Burns
and cancer are less common, but
more damaging
 The
following are the most common skin
 These infections are caused by bacteria,
viruses, or fungus
 Itchy, red, peeling
 Fungal
of skin between toes
 Inflammation
of hair follicles and
sebaceous glands
 Bacterial
 Small, fluid-filled
blisters that itch and
 Herpes simplex infection (viral)
 Water-filled
lesions that develop yellow
crust and eventually rupture
 Bacterial
 Red
lesions covered with dry, silvery
 Bacterial and viral infections
 Contact
• Itching, redness, and swelling of the skin; leads
to blistering
• Caused by exposure of skin to chemicals that
provoke allergic reactions
burn is tissue damage and cell death
caused by intense heat, electricity, UV
radiation (sunburn), or certain chemicals
(such as acids)
 Classified
according to severity
 1st
degree: only epidermis is damaged.
Skin becomes red and swollen.
 Healing in 2-3 days by regeneration
 2nd
degree: damage to epidermis and
upper layer of dermis. Skin blisters.
 Regeneration usually occurs if infection is
 3rd
degree: entire thickness of skin is
 Since nerves are also destroyed, victim
doesn’t feel the pain.
 Regeneration impossible, skin must be
grafted from unaffected tissue
 Facial
burns are dangerous because the
respiratory passages may become
swollen and lead to suffocation
 Joint
injuries are troublesome because
scar tissue limits joint mobility