| A | B |
|---|
| Macule | Flat discolored skin lesion less than 1 cm. |
| Patch | Large flat discolored skin lesion greater than 1 cm. |
| Papule | Small solid raised bump less than 1 cm. |
| Plaque | Flat raised lesion formed by merging papules. |
| Vesicle | Small fluid-filled blister less than 1 cm. |
| Bulla | Large fluid-filled blister greater than 1 cm. |
| Pustule | Small, raised lesion filled with pus. |
| Nodule | Firm raised lesion extending into deeper skin layers. |
| Cyst | Closed sac containing fluid or semi-solid material. |
| Wheal (Hives) | Raised itchy areas that appear suddenly and fade within 24 hours; associated with allergic reactions. |
| Urticaria | Medical term for the condition of having hives. |
| Erosion | Shallow skin loss involving only the epidermis. |
| Ulcer | Deep skin loss involving dermis or deeper tissue. |
| Fissure | Deep, linear crack or groove in dry, thickened skin. |
| Abrasion | Superficial scrape caused by friction or trauma. |
| Excoriation | Abrasion caused by scratching or picking. |
| Laceration | Torn or jagged wound with uneven edges. |
| Puncture | Deep narrow wound caused by a sharp object. |
| Crust | Dried serum, pus, or blood on the skin surface. |
| Scale | Flaky shedding of dead epidermal cells. |
| Scar (Cicatrix) | Fibrous tissue replacing skin after injury. |
| Keloid | Raised thickened scar extending beyond original wound. |
| Pruritus | Persistent itching of the skin. |
| Xeroderma | Excessively dry skin that may crack or scale. |
| Erythema | Redness of the skin from increased blood flow to superficial vessels. |
| Diaphoresis | Excessive or abnormal sweating. |
| Alopecia | Partial or complete hair loss. |
| Eczema | Skin condition causing inflammation, irritation and itchiness; related to allergies. |
| Seborrheic Dermatitis | Chronic eczema affecting oily skin areas; in infants known as cradle cap. |
| Psoriasis | Autoimmune disorder causing accelerated skin cell production and scaly plaques |
| Acne Vulgaris | Inflammatory disorder of hair follicles clogged with sebum and dead skin cells. |
| Comedone (Pimple) | Clogged hair follicle; blackhead or whitehead. |
| Vitiligo | Loss of skin pigmentation due to melanocyte destruction. |
| Albinism | Inherited absence of melanin pigmentation. |
| Lipoma | Benign, soft, movable fatty tumor beneath the skin. |
| Burn | Skin injury caused by heat, chemicals, or radiation. |
| First-degree Burn | Burn affecting only the epidermis causing redness and pain. |
| Second-degree Burn | Burn causing blistering and dermis damage. |
| Third-degree Burn | Deep burn with tissue destruction of all skin layers and damage to nerve endings |
| Rule of Nines | Method to estimate body surface area affected by burns. |
| Gangrene | Tissue necrosis due to lack of blood supply or infection. |
| Nevus | Mole or pigmented skin lesion. |
| Cellulitis | Bacterial infection of deeper skin tissues causing redness, swelling and tenderness. |
| Impetigo | Contagious superficial bacterial skin infection; most commonly affects children. |
| Furuncle | Boil caused by infected hair follicle. |
| Boil | Common term for furuncle. |
| Tinea Corporis (Ringworm) | Fungal infection of body skin; causes circular, scaly patches. |
| Tinea Pedis (Athlete's foot) | Fungal foot infection. |
| Tinea Cruris (Jock itch) | Fungal infection of the groin. |
| Scabies | Mite infestation that burrows into skin causing intense itching. |
| Verruca (Wart) | Rough, raised growth caused by HPV infection |
| Biopsy | Removal of tissue sample for microscopic examination. |
| Skin Culture | Lab test to identify infectious organisms. |
| Dermoscopy | Magnified visual examination of the skin. |
| Wood's Lamp | Ultraviolet light used to identify infections or pigment changes. |
| Debridement | Removal of dead or infected tissue. |
| Cryosurgery | Freezing and removal of abnormal tissue. |
| Phototherapy | Controlled ultraviolet light treatment. |
| Incision and Drainage | Surgical release of pus from abscesses. |
| Skin Graft | Transplantation of healthy skin. |
| Rhytidectomy | Cosmetic surgery to reduce wrinkles. |
