6.2 Secondary Lesions & Vascular Conditions
Key Takeaways
- Secondary lesions develop in the later stages of a disease or from manipulation of a primary lesion, and include scale, crust, excoriation, fissure, ulcer, scar and keloid.
- A crust is dried serum, blood or pus on the skin surface, while a scale is a shedding accumulation of epidermal flakes.
- An excoriation is a superficial abrasion from scratching or scraping, and a fissure is a crack in the skin penetrating into the dermis.
- A keloid is a raised, thickened scar extending beyond the original wound boundary and is a relative contraindication to aggressive exfoliation.
- Telangiectasia is permanently dilated capillaries visible beneath the skin surface, and it contraindicates high heat, aggressive steaming and vigorous massage.
6.2 Secondary Lesions & Vascular Conditions
1. Secondary Skin Lesions
Secondary lesions develop during the evolutionary progression of a cutaneous disease, resulting from the transformation of a primary lesion, secondary bacterial infection, physical trauma (scratching, picking), or normal physiological wound repair and scar formation.
┌──────────────────────────────────────────────────────────┐
│ SECONDARY CUTANEOUS LESIONS │
└────────────────────────────┬─────────────────────────────┘
│
┌──────────────────────────────┼──────────────────────────────┼──────────────────────────────┐
▼ ▼ ▼ ▼
┌──────────────────────────────┐ ┌──────────────────────────────┐ ┌──────────────────────────────┐ ┌──────────────────────────────┐
│ ACCUMULATION DEBRIS │ │ LOSS OF INTEGRITY │ │ TRAUMATIC INJURY │ │ REPAIR & FIBROSIS │
├──────────────────────────────┤ ├──────────────────────────────┤ ├──────────────────────────────┤ ├──────────────────────────────┤
│ • Crust (scab / dried fluid) │ │ • Fissure (linear dermal rip)│ │ • Excoriation (scratch mark) │ │ • Scar / Cicatrix (collagen) │
│ • Scale (flaking keratin) │ │ • Erosion (epidermal loss) │ │ • Neurotic picking / nails │ │ • Keloid (hypertrophic over- │
│ • Psoriasis / seborrhea │ │ • Ulcer (dermal necrosis) │ │ • Mechanical epidermal tear │ │ growth beyond wound edge) │
└──────────────────────────────┘ └──────────────────────────────┘ └──────────────────────────────┘ └──────────────────────────────┘
| Secondary Lesion | Clinical Definition & Characteristics | Tissue Layer Affected | Clinical Examples & Esthetic Significance |
|---|---|---|---|
| Crust (Scab) | A dried mass of exudate, blood, serum, or purulent material adhering to the skin surface following vesicle rupture or wound weeping | Epidermal surface | Scab over an abraded blemish, impetigo (honey-colored crusts; strict contraindication) |
| Scale | An abnormal shedding, flaking, or accumulation of dry, cornified keratinocytes from the stratum corneum | Stratum corneum | Psoriasis (silvery micaceous scales), seborrheic dermatitis (greasy yellow scales), severe xerosis, dandruff |
| Fissure | A linear crack, slit, or groove extending through the epidermis into the living papillary or reticular dermis | Epidermis into Dermis | Severely chapped winter lips, cracked callused heels, angular cheilitis at mouth corners |
| Erosion | A superficial, moist, circumscribed loss of all or part of the epidermis; heals completely without permanent scarring | Epidermis only (moist basal layer exposed) | Ruptured epidermal vesicle, superficial skin peeling, mild chemical burn |
| Ulcer | A deep, excavated, concave loss of skin extending through the epidermis into the dermis or subcutaneous tissue with necrotic tissue loss | Epidermis, Dermis, and Subcutis | Stasis ulcer, decubitus pressure ulcer, deep syphilitic chancre, ulcerating basal cell carcinoma; always leaves a permanent scar |
| Excoriation | A superficial linear or punctate mechanical abrasion or gouge produced by scratching, scraping, or obsessive picking | Epidermis (occasional superficial papillary dermis) | Acne excoriée (dermatillomania), scratch marks from pruritus, insect bite scratching |
| Scar (Cicatrix) | Dense, fibrous collagenous connective tissue that replaces normal dermal tissue following injury, ulceration, or surgical incision | Dermis and Subcutis | Healed surgical incision, healed severe acne lesion; lighter/hypopigmented and devoid of hair follicles and sweat glands |
| Keloid | A thick, raised, hypertrophic overgrowth of dense fibrous collagen scar tissue that proliferates significantly beyond the original wound margins | Dermis and Subcutis | Excessive scar formation following ear piercing, surgery, or burns; genetic predisposition, highly prevalent in Fitzpatrick IV–VI |
2. Vascular Cutaneous Conditions
Vascular disorders involve disturbances, abnormalities, or permanent structural dilations within the superficial microcirculation of the dermis.
┌──────────────────────────────────────────────────────────┐
│ VASCULAR CUTANEOUS CONDITIONS │
└────────────────────────────┬─────────────────────────────┘
│
┌──────────────────────────────┴──────────────────────────────┐
▼ ▼
┌──────────────────────────────┐ ┌──────────────────────────────┐
│ ROSACEA │ │ TELANGIECTASIAS │
│ (Inflammatory Vascular) │ │ (Couperose Capillaries) │
├──────────────────────────────┤ ├──────────────────────────────┤
│ • Central facial erythema │ │ • Permanently dilated venules│
│ • Telangiectasias & flushing │ │ • Spider veins / broken caps │
│ • Papules & pustules (no pus)│ │ • Weakened capillary walls │
│ • Rhinophyma in late stages │ │ • Common on nose & cheeks │
│ • Triggers: heat, spice, UV │ │ • Non-inflammatory baseline │
└──────────────────────────────┘ └──────────────────────────────┘
Rosacea
Rosacea is a chronic, non-contagious inflammatory neurovascular skin condition primarily affecting the central third of the face (malar cheeks, nose, forehead, and chin).
- Primary Manifestations: Persistent central facial erythema (redness), transient flushing episodes, visible telangiectasias, and inflammatory papules and pustules (historically misnamed "acne rosacea," though true rosacea does not feature comedones).
- Advanced Complications:
- Ocular Rosacea: Dryness, gritty sensation, blepharitis, and conjunctival injection.
- Phymatous Changes / Rhinophyma: Progressive sebaceous gland hypertrophy and dermal connective tissue thickening, resulting in a bulbous, enlarged, irregular nose (most common in older men).
- Physiological & Environmental Triggers:
- Thermal: Hot baths, saunas, extreme ambient heat, rapid temperature fluctuations, hot beverages.
- Nutritional: Spicy foods, capsaicin, histamine-rich foods, alcohol (especially red wine), vasodilating compounds.
- Environmental: Ultraviolet (UV) radiation, wind, harsh freezing weather.
- Emotional & Physical: Psychological stress, vigorous cardiovascular exertion.
- Microbial: Overproliferation of microscopic Demodex folliculorum mites in pilosebaceous units provoking immune inflammation.
Telangiectasias (Couperose Skin)
Telangiectasias (commonly known in esthetic terminology as couperose skin or broken capillaries) are permanently distended, dilated superficial capillaries and post-capillary venules located in the papillary dermis.
- Visual Presentation: Fine, thread-like red, violet, or bluish lines visible through the epidermis, most prominent on the nasal alae, cheeks, and décolleté.
- Etiological Factors: Chronic sun exposure (photoaging), genetic predisposition, frequent microvascular vasodilation/constriction cycles, excessive mechanical pressure during extractions, aggressive microdermabrasion, severe temperature shocks, and chronic alcohol consumption.
- Esthetic Protocol Adjustments: Avoid aggressive suction, high-temperature facial steamers held too close, harsh mechanical scrubs, and vigorous tapotement massage over couperose areas.
3. Scar Morphology and the Three Phases of Healing
Not every scar is a keloid, and the distinctions below are the ones clients actually ask about after acne:
| Scar type | Appearance | What is realistically achievable |
|---|---|---|
| Ice-pick | Narrow, deep, sharply defined puncture tracks | Deepest form; will not respond to superficial exfoliation |
| Boxcar | Round or oval depressions with steep vertical walls | Edges soften with repeated superficial resurfacing |
| Rolling | Broad, shallow undulations caused by dermal tethering | Gradual improvement from dermal stimulation |
| Hypertrophic | Raised, red, firm — stays inside the wound margin | Often flattens over months |
| Keloid | Raised and extends past the wound margin | Does not resolve; avoid provoking further trauma |
| Atrophic | Thin, depressed, sometimes pale | Loss of dermal volume |
Two further secondary changes belong beside the table in Section 1. Lichenification is a leathery thickening with exaggerated skin markings produced by chronic rubbing or scratching. Atrophy is a thinning and loss of skin substance, classically after long-term topical corticosteroid use — a history worth asking about before any exfoliation, because atrophic skin injures easily.
Wound repair proceeds through three overlapping phases: an inflammatory phase of clotting and immune influx over roughly the first three days; a proliferative phase of fibroblast activity, new collagen and re-epithelialization across the following weeks; and a remodeling phase in which collagen reorganizes and the scar matures over months to about two years. Two consequences matter daily. Picking a lesion restarts the inflammatory phase and is the direct cause of most post-inflammatory hyperpigmentation and atrophic scarring. And a new scar must be protected from ultraviolet light for the entire remodeling period, because immature tissue pigments readily and permanently.
4. Reading Redness: Four Vascular Patterns
Not all redness is the same, and telling the patterns apart changes the protocol:
| Presentation | What it is | Blanches under pressure? |
|---|---|---|
| Erythema | Transient vasodilation | Yes |
| Telangiectasia | Permanently dilated vessels | Yes, refilling immediately |
| Petechiae and purpura | Blood outside the vessel, pinpoint to patch sized | No |
| Ecchymosis (bruise) | Larger extravasation that color-cycles through green and yellow | No |
Pressing a clear glass slide or a gloved fingertip against the skin — a maneuver called diascopy — separates dilated vessels, which blanch, from blood that has already left the vessel, which does not. Non-blanching purpura appearing after a wax or an extraction means capillary rupture and must be documented in the client record.
Other named vascular findings include nevus flammeus, the port-wine stain, a permanent congenital capillary malformation; cherry angiomas, small bright-red papular vessel proliferations that become common after age 30; and spider angiomas, a central arteriole with fine radiating branches.
Scope note: vascular lesions are not an esthetician's to remove. Work around them with reduced heat, greater steamer distance and lighter pressure, use cool compresses and calming ingredients, and refer any client who wants the vessels themselves cleared to a physician.
During a skin examination, an esthetician observes an excessively thickened, raised, rubbery fibrous overgrowth of tissue that has expanded significantly beyond the boundaries of an original piercing wound. What is this secondary lesion called?
What fundamentally distinguishes a secondary skin lesion from a primary skin lesion?