• Macule(उपरंजकयुक्त) : A macule is a change in surface color, without elevation or depression, so nonpalpable, well or ill-defined, variously sized, but generally considered less than either 5 or 10 mm in diameter at the widest point.
• Patch: A patch is a large macule equal to or greater than either 5 or 10 mm across, depending on one's definition of a macule.Patches may have some subtle surface change, such as a fine scale or wrinkling, but although the consistency of the surface is changed, the lesion itself is not palpable.
• Papule: A papule is a circumscribed, solid elevation of skin with no visible fluid, varying in size from a pinhead to less than either 5 or 10 mm in diameter at the widest point.
• Plaque: A plaque has been described as a broad papule, or confluence of papules equal to or greater than 10 mm, or alternatively as an elevated, plateau-like lesion that is greater in its diameter than in its depth.
• Nodule: A nodule is morphologically similar to a papule in that it is also a palpable spherical lesion less than 10 mm in diameter. However, it is differentiated by being centered deeper in the dermis or subcutis.
• Tumor: Similar to a nodule, but it is larger than 10 mm in diameter.
• Vesicle: A vesicle is small blister, a circumscribed, fluid-containing, epidermal elevation generally considered less than either 5[10] or 10 mm in diameter at the widest point. The fluid is clear serous fluid.
• Bulla: A bulla is a large blister, a rounded or irregularly shaped blister containing serous or seropurulent fluid, equal to or greater than either 5 or 10 mm, depending on one's definition of a vesicle.
• Pustule: A pustule is a small elevation of the skin containing cloudy or purulent material (pus) usually consisting of necrotic inflammatory cells. These can be either white or red.
• Cyst: A cyst is an epithelial-lined cavity containing liquid or a semisolid or solid material.
• Wheal: A wheal is a rounded or flat-topped, pale red papule or plaque that is characteristically evanescent, disappearing within 24 to 48 hours. The temporary raised bubble of taut skin on the site of a properly delivered intradermal (ID) injection is also called a welt, with the ID injection process itself frequently referred to as simply raising a wheal in medical texts.
• Telangiectasia: A telangiectasia represents an enlargement of superficial blood vessels to the point of being visible.
• Burrow: A burrow appears as a slightly elevated, grayish, tortuous line in the skin, and is caused by burrowing organisms.

• Scale: Dry or greasy laminated masses of keratin,[30] they represent thickened stratum corneum.[29]
• Crust: Dried sebum, pus, or blood usually mixed with epithelial and sometimes bacterial debris[10]
• Lichenification: Epidermal thickening characterized by visible and palpable thickening of the skin with accentuated skin markings[1]
• Erosion: An erosion is a discontinuity of the skin exhibiting incomplete loss of the epidermis,[32] a lesion that is moist, circumscribed, and usually depressed.[21][33]
• Excoriation: A punctate or linear abrasion produced by mechanical means (often scratching), usually involving only the epidermis, but commonly reaching the papillary dermis[30][33]
• Ulcer: An ulcer is a discontinuity of the skin exhibiting complete loss of the epidermis and often portions of the dermis and even subcutaneous fat.[32][33]
• Fissure is a crack in the skin that is usually narrow but deep.[29][33]
• Induration is dermal thickening causing the cutaneous surface to feel thicker and firmer.[29]
• Atrophy refers to a loss of tissue, and can be epidermal, dermal, or subcutaneous.[30] With epidermal atrophy, the skin appears thin, translucent, and wrinkled.[29] Dermal or subcutaneous atrophy is represented by depression of the skin.[29]
• Maceration: softening and turning white of the skin due to being consistently wet.
• Umbilication is formation of a depression at the top of a papule, vesicle, or pustule.[34]
• Phyma: A tubercle on any external part of the body, such as in phymatous rosacea

Configuration refers to how lesions are locally grouped (organized), which contrasts with how they are distributed (see next section).

• Agminate: in clusters
• Annular or circinate: ring-shaped
• Arciform or arcuate: arc-shaped
• Digitate: with finger-like projections
• Discoid or nummular: round or disc-shaped
• Figurate: with a particular shape
• Guttate: resembling drops
• Gyrate: coiled or spiral-shaped
• Herpetiform: resembling herpes
• Linear
• Mammillated: with rounded, breast-like projections
• Reticular or reticulated: resembling a net
• Serpiginous: with a wavy border
• Stellate: star-shaped
• Targetoid: resembling a bullseye
• Verrucous or Verruciform: wart-like

Distribution refers to how lesions are localized. They may be confined to a single area (a patch) or may exist in several places. Some distributions correlate with the means by which a given area becomes affected. For example, contact dermatitis correlates with locations where allergen has elicited an allergic immune response. Varicella zoster virus is known to recur (after its initial presentation as chicken pox) as herpes zoster (shingles). Chicken pox appears nearly everywhere on the body, but herpes zoster tends to follow one or two dermatomes; for example, the eruptions may appear along the bra line, on either or both sides of the patient.[citation needed]

• Generalized
• Symmetric: one side mirrors the other
• Flexural: on the front of the fingers
• Extensor: on the back of the fingers
• Intertriginous: in an area where two skin areas may touch or rub together
• Morbilliform: resembling measles
• Palmoplantar: on the palm of the hand or bottom of the foot
• Periorificial: around an orifice such as the mouth
• Periungual/subungual: around or under a fingernail or toenail
• Blaschkoid: following the path of Blaschko's lines in the skin
• Photodistributed: in places where sunlight reaches
• Zosteriform or dermatomal: associated with a particular nerve

• Collarette
• Comedo
• Confluent
• Eczema (a type of dermatitis)
• Evanescent (lasting less than 24 hours)
• Granuloma
• Livedo
• Purpura
• Erythema (redness)
• Horn (a cell type)
• Poikiloderma