Skin

Epidermis
- Functions:
- Prevents intrusions of micro-organisms, debris, chemicals, and ultraviolet radiation.
- Prevents loss of water and electrolytes.
- Performs heat regulation through conduction, radiation, and convection.
Dermis
- Functions:
- Protects against physical trauma.
- Contains sensory nerve endings for sensation.
- Holsters water and electrolytes to maintain hydration.
- Contains eccrine and apocrine sweat glands, hair, nails, and sebaceous glands.
Subcutaneous Tissue
- Functions:
- Stores fat for energy reserves.
- Regulates heat to maintain body temperature.

Etiology:
- Allergic reactions, infections, stress, exposure to temperature changes, etc.
Signs and Symptoms:
- Raised, itchy welts (hives) on the skin.
- Potential swelling, erythema.
Management:
- Avoid triggers, antihistamines, corticosteroids as prescribed.

Etiology:
- Excessive exposure to sunlight leading to UV damage.
Signs and Symptoms:
- Redness, pain, peeling skin, possibly blistering.
Management:
- Cold compresses, aloe vera, pain relief medications, sunscreen.

1st Degree:
- Irritates the skin with mild discomfort; symptoms include redness and swelling.
2nd Degree:
- Blisters form, but there is no major damage to skin structure.
3rd Degree:
- Involves all layers of the skin, resulting in permanent tissue damage. Symptoms include numbness, blackened skin.

Etiology:
- Infection caused by the herpes simplex virus (HSV).
Signs and Symptoms:
- Painful blisters on the lips (HSV-1) or genital area (HSV-2).
- Tingling or itching prior to outbreak.
Management:
- Antiviral medications, topical treatments, avoid direct contact during outbreaks.

Tinea Corporis

Etiology:
- Infection by dermatophytes; can result from direct contact with infected individuals or surfaces.
Signs and Symptoms:
- Itchy, circular patches with raised borders.
Management:
- Antifungal creams or oral medications.

Tinea Unguium

Tinea Pedis

Etiology:
- Fungal infection commonly known as athlete's foot.
Signs and Symptoms:
- Itching, burning, cracking skin between toes and on soles.
Management:
- Keep feet dry, antifungal powders or creams.

Tinea Cruris

Etiology:
- Fungal infection in the groin area; often occurs in warm, moist environments.
Signs and Symptoms:
- Itchy rash with raised edges; often redder at the periphery.
Management:
- Antifungal creams, keep the area dry.

Tinea Capitis

Etiology:
- Fungal infection of the scalp, often affecting children.
Signs and Symptoms:
- Patchy hair loss and scaling; possible inflammation.
Management:
- Oral antifungal medications; may be complemented with medicated shampoos.

Tinea Versicolor

Etiology:
- Overgrowth of yeast on the skin, triggers can include hot, humid weather.
Signs and Symptoms:
- Discolored patches that may itch; usually lighter or darker than surrounding skin.
Management:
- Topical or oral antifungals; removal of excess oil.

Objective:
- Research a list of specified general medical conditions in pairs:
- Specify Etiology, Signs and Symptoms, Management.
Submission:
- Type findings in BlackBoard discussion board under "General Medical Condition Activity".
Presentations:
- Each group to present their condition either by end of class or start of next lecture.