Skin examination

Skin Exam Preparation

  • Ensure patient is in a gown without socks
    • Important for full skin exam to inspect areas like between toes
    • For full skin examination:
    • No bra, underwear can remain on
  • Use proper lighting for effective examination
    • Tools: measuring tape, magnifying glass, or derma scope
    • Dermatologists utilize a dermatoscope for detailed inspection, especially for potential melanoma
  • Obtain verbal consent before examining sensitive areas (genitalia/breasts)
    • Always have a chaperone present during the exam for safety and ethics
    • Important to develop the habit of this practice in OSCEs (Objective Structured Clinical Examinations)
  • Wash hands before examination
  • Wearing gloves considerations:
    • Often not required in dermatology, but maintain a clean approach

General Examination Approach

  • Establishing a routine is key:
    • Consistent method prevents missing important information
  • Start all physical exams with a general survey
    • Focus on inspection first, followed by palpation
  • Areas to inspect include:
    • Scalp
    • Hair texture and distribution
    • Skin color changes (check for blanching)
    • Blanching: color returns after pressure, indicating healthy blood flow
    • Non-blanching: persists after pressure, indicating possible issue
    • Lesions on the scalp, eyebrows, eyelids, etc.
    • Certain diseases (e.g., endocrine disorders) may influence hair appearance

Skin Changes and Dermatological Awareness

  • Key terms to recognize in skin conditions:
    • "Curly, pink lesion, nodular, telangiectasia"
    • Common sites for skin cancer include exposed areas (e.g., eyelids, nose, ears)
  • Skin turgor as a hydration assessment:
    • Pinch skin; if it remains tented, indicates possible dehydration

- Preferred assessment: oral mucosa evaluation for dryness (lips, tongue)

Skin Cancer Overview

  • Most commonly diagnosed cancer in the U.S.
    • Notably highlights need for awareness and early detection
  • Types of skin cancer:
    • Basal Cell Carcinoma: slowest growing, non-melanoma, rarely fatal
    • Squamous Cell Carcinoma: potentially more aggressive than basal cell
    • Melanoma: most lethal; capable of metastasizing
  • Risk Factors for Skin Cancer:
    • Ultraviolet (UV) radiation exposure (e.g., sunburn, tanning beds)
    • Genetic predisposition: fair-skinned individuals at higher risk
  • Importance of early detection and monitoring:
    • Regular skin checks recommended

Pressure Ulcers and Wound Care

  • Significant concern in healthcare particularly for elderly populations
    • Impact of immobilization on skin integrity leading to ulcers
  • Staging of pressure injuries:
    • Stage 1: skin intact but reddened and irritated
    • Stage 2: partial thickness loss, involving epidermis and possibly part of dermis
    • Stage 3: full thickness loss, exposing adipose tissue
    • Stage 4: extensive damage reaching muscle, tendons, or bone
    • Unstageable: covered with eschar, making assessment impossible

Distinguishing Skin Conditions

  • Differentiating cellulitis from abscess:
    • Both can present with inflammation, tenderness, and warmth
    • Cellulitis: generalized infection without pus; marked by redness and tenderness
    • Abscess: localized collection of pus—feels fluctuance on palpation
  • Treatment protocols may involve antibiotics, ultrasound for abscess identification

Hair and Nail Disorders

  • Types of hair in adults:
    • Vellus hair: short, fine, unpigmented
    • Terminal hair: pigmented, thicker (e.g., scalp, beard, brows)
  • Alopecia: types and causes:
    • Androgenic alopecia: hereditary pattern baldness
    • Telogen effluvium: temporary hair shedding post-trauma or stress
    • Alopecia areata: autoimmune disorder causing patchy hair loss
    • Traction alopecia: caused by tight hairstyles
  • Nail changes as indicators:
    • Inspect for deformities, nutritional deficiencies, or infections

Melanoma and Skin Cancer Biopsy Protocol

  • Melanoma can appear under the nail (subungual) or on skin, requiring precise biopsy
  • Mohs surgery widely used for cancer removal
    • Process: remove lesion, pathological review for clear margins
    • Important for areas sensitive to loss of tissue (e.g., face, eyelids)
    • Discuss signs of trauma or any significant history during patient examination
  • Importance of monitoring nail health and appearance post-injury

Conclusion

  • Regular skin and hair assessments can help with early detection of issues
  • Stay informed about skin conditions, understand normal and abnormal changes
  • Educate patients about skin health, preventive measures, and awareness of changes in appearance