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Target lesions are the typical lesions of erythema multiforme, in which a vesicle is surrounded by an often hemorrhagic maculopapule. Erythema multiforme is often self-limited, of acute onset, resolves in three to six weeks, and has a cyclical pattern. Its lesions are multiform (polymorphous) and include macules, papules, vesicles, and bullae.
Vesicle: A vesicle or bleb is a small blister, [31] a circumscribed, epidermal elevation generally considered less than either 5 [10] or 10 mm in diameter at the widest point. [ 30 ] Bulla : A bulla is a large blister , [ 31 ] a rounded or irregularly shaped blister equal to or greater than either 5 [ 10 ] or 10 mm, [ 30 ] depending on one's ...
[19] [20] Clinically, the diagnosis of any particular skin condition is made by gathering pertinent information regarding the presenting skin lesion(s), including the location (such as arms, head, legs), symptoms (pruritus, pain), duration (acute or chronic), arrangement (solitary, generalized, annular, linear), morphology (macules, papules ...
It may only appear red in lighter-skinned people. The term "maculopapular" is a compound: macules are small, flat discolored spots on the surface of the skin; and papules are small, raised bumps. It is also described as erythematous, or red.
Initially red to pink, flat spots (formally, "macules") and raised bumps (formally, "papules") may be seen on the skin. [5] [6] Once fully developed, the classic appearance is "non-blanching, palpable purpura". [6] [5] [7] This appears as deep red to purple spots that feel raised to the touch. Purpura refers to the red-purple discolored spots ...
A papule can be flesh colored, yellow, white, brown, black, blue or purplish, or varying shades of red. [4] [6] The intensity of redness might indicate how long the papule has been present. [6] There may be just one or many, and they may occur irregularly in different parts of the body or appear in clusters. [2] It may progress to a pustule or ...
Histopathological image of dyshidrotic dermatitis, showing focal spongiotic change in the epidermis. Spongiosis is mainly intercellular [1] edema (abnormal accumulation of fluid) in the epidermis, [2] and is characteristic of eczematous dermatitis, manifested clinically by intraepidermal vesicles (fluid-containing spaces), "juicy" papules, and/or lichenification. [3]
Janeway lesions present as red, painless macules and papules on the palms and soles. [1]They are not common and are frequently indistinguishable from Osler's nodes.Rarely, they have been reported in cases of systemic lupus erythematosis (SLE), gonococcemia (disseminated gonorrhoea), haemolytic anaemia and typhoid fever.