• Ahmad Wagih Abdel (Halim)

Skin Lesions

  • Macule: A circumscribed area of discolored skin, no elevations or vesicles.

  • Papule (<0.5cm) or nodule (>0.5 cm): A circumscribed area of a skin elevation.

  • Plaque: A disc-shaped, elevated lesion greater than 2 cm in diameter.

  • Vesicle: A fluid-filled lesion, less than 0.5 cm in diameter.

  • Bulla: A fluid-filled lesion, more than 0.5 cm in diameter.

  • Wheal: A rapidly-formed skin elevation caused by edema of the dermis. Pathognomonic of urticaria.

  • Comedone: A plug in the sebaceous gland orifice. Seen in acne vulgaris.

  • Burrow: A grayish, irregular, linear elevation of the horny layer of the skin. Pathognomonic of scabies.

  • Ulcer: Loss of skin layers including the dermis, healing with a scar.

  • Abrasion or excoriation: Superficial loss of skin layers, not involving the dermis; no scar involved.

  • Scar: Connective tissue that replaces lost tissue anywhere in the body.

Fungal Infections

Tinea Capitis (refer to Fig. 2.1)

  • Introduction: Ringworm of the scalp.

  • Organisms: Dermatophyte, Microsporum...


Clinical Picture Herpes Simplex Virus Type Herpes Zoster Necrotizing Fasciitis Toxic Epidermal Necrolysis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.McLaren Regional Medical CenterFlintUSA

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