1. 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

2. Infections The following are the most common skin infections
These infections are caused by bacteria, viruses, or fungus

3. Athlete’s Foot
Itchy, red, peeling of skin between toes
Fungal

4. Boils and Carbuncles
Inflammation of hair follicles and sebaceous glands
Bacterial

5. Cold Sores Small, fluid-filled blisters that itch and sting
Herpes simplex infection (viral)

6. Impetigo
Water-filled lesions that develop yellow crust and eventually rupture
Bacterial

7. Psoriasis Red lesions covered with dry, silvery scales
Bacterial and viral infections

8. Allergies Contact dermatitis:
Itching, redness, and swelling of the skin; leads to blistering
Caused by exposure of skin to chemicals that provoke allergic reactions

9. Burns
A burn is tissue damage and cell death caused by intense heat, electricity, UV radiation (sunburn), or certain chemicals (such as acids)

10. Burn degrees
Classified according to severity

11. 1st degree burns
1st degree: only epidermis is damaged. Skin becomes red and swollen.
Healing in 2-3 days by regeneration

12. 1st degree burn

13. 2nd degree burns
2nd degree: damage to epidermis and upper layer of dermis. Skin blisters.
Regeneration usually occurs if infection is prevented

14. 2nd Degree burn

15. 2nd Degree Burns

16. 3rd degree burns 3rd degree: entire thickness of skin is destroyed.
Since nerves are also destroyed, victim doesn’t feel the pain.
Regeneration impossible, skin must be grafted from unaffected tissue

17. 3rd degree burn

18. 3rd Degree Burn

19. Why are face, hands, and feet burns so dangerous?
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