Makindo Medical Notes"One small step for man, one large step for Makindo" |
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Related Subjects:
|Nikolsky's sign
|Koebner phenomenon
|Erythema Multiforme
|Pyoderma gangrenosum
|Erythema Nodosum
|Dermatitis Herpetiformis
|Lichen Planus
|Acanthosis Nigricans
|Acne Rosacea
|Acne Vulgaris
|Alopecia
|Vitiligo
|Urticaria
|Basal Cell Carcinoma
|Malignant Melanoma
|Squamous Cell Carcinoma
|Mycosis Fungoides (Sezary Syndrome)
|Xeroderma pigmentosum
|Bullous Pemphigoid
|Pemphigus Vulgaris
|Seborrheic Dermatitis
|Pityriasis/Tinea versicolor infections
|Pityriasis rosea
|Scabies
|Dermatomyositis
|Toxic Epidermal Necrolysis
|Stevens-Johnson Syndrome
|Atopic Eczema/Atopic Dermatitis
|Psoriasis
| Name | Description |
|---|---|
| 🌸 Dermatosis | Any cutaneous lesion or group of lesions. A nonspecific umbrella term for skin disease. |
| 🔥 Dermatitis (Eczema) | Inflammation of the skin. Eczema often used interchangeably with atopic dermatitis. |
| 🤧 Pruritus | Itching of the skin. |
| 🔴 Erythema | Redness due to vascular congestion or increased perfusion. |
| ⚪ Macule | Flat, circumscribed change in skin colour without elevation/depression.
>2 cm = patch. Examples: Café-au-lait spots, Mongolian spot, freckles. |
| 🔵 Papule | Solid, elevated lesion ≤0.5 cm. May arise from deposits, infiltrates, or cellular hyperplasia.
Papulosquamous lesions = papules with scaling. |
| 🔘 Nodule | Larger, deeper papule, usually >0.5 cm, located in dermis, subcutaneous tissue, or epidermis.
Examples: Xanthoma, metastatic deposits. |
| 🟪 Plaque | Flat-topped, elevated lesion ≥2 cm. Often formed by coalescence of papules. Surface area > height. |
| 💭 Wheal | Transient, raised, edematous lesion (urticarial). Often erythematous and itchy. Size varies from mm → cm. Seen in hives. |
| 💧 Vesicle / Bulla | Clear fluid-filled lesions.
Vesicle: ≤0.5 cm. Bulla: >0.5 cm. Superficial = flaccid. Example: herpes (vesicles), bullous pemphigoid (bullae). |
| 🟡 Pustule | Elevated lesion filled with purulent fluid (white, yellow, or green).
Example: acne pustules. |
| 🩸 Abscess | Localized pus collection within tissue cavity, often with necrosis. |
| 🎈 Cyst | Closed sac containing liquid or semisolid material. Usually resilient on palpation. |
| 📉 Atrophy | Thinning of epidermis/dermis → depressed skin.
Example: striae (“stretch marks”). |
| 🪨 Sclerosis | Diffuse or circumscribed hardening of skin due to dermal/subcutaneous induration. |
| ⬇️ Erosion | Loss of epidermis only. |
| ⚠️ Ulcer | Loss of epidermis + dermis (may extend deeper). If due to scratching → “excoriation”. |
| 〰️ Fissure | Linear cleavage in skin surface (variant of erosion/ulcer).
Example: heel fissures. |
| 🌿 Desquamation | Scaling/exfoliation of the stratum corneum. |
| ➕ Scar | Fibrous tissue after ulceration.
May be hypertrophic, atrophic, or cribriform (pitted). |
| 🩹 Crust (“Scab”) | Dried serum, pus, or blood.
Yellow = serum, green = purulent, brown/red = blood. Hallmark of pyogenic infection. |
| 🪵 Lichenification | Chronic epidermal thickening with exaggerated skin markings, often from scratching/rubbing. |