Skin lesions Initially red to pink, flat spots (formally, "macules") and raised bumps (formally, "papules") may be seen on the skin. Once fully developed, the classic appearance is "non-blanching, palpable purpura". This appears as deep red to purple spots that feel raised to the touch. Purpura refers to the red-purple discolored spots, while palpable implies that these spots can be felt as raised from the surrounding skin. Additionally, when gently pressed, the color does not fade to a lighter color ("non-blanching"). The red-purple color of the lesions is due to the inflammation in the blood<unk> s causing red blood cells to escape into the dermis skin layer.<unk>  fluid-filled blisters (or "vesicles"), pus-filled bumps resembling a pimple (or "pustules"), or<unk> ow ulcers may also develop but are less common. The location of skin lesions varies but are most commonly found symmetrically below the waist, primarily on the buttocks and legs. Other distributions include localized areas on the upper body or over several areas of the body. With treatment, the lesions typically resolve in weeks to months and leave behind flat spots that are darker than the surrounding skin (see "Postinflammatory hyperpigmentation" on "Hyperpigmentation"). A portion of cases may be persistent or recurrent. This tends to occur when the vasculitis is associated with chronic conditions such as connective tissue diseases. Associated symptoms In most cases skin lesions do not cause symptoms, however itching, burning, or pain may occur. Frequently reported symptoms include mild fever, muscle pain, joint pain, or an overall feeling of discomfort. Additional symptoms depend on the cause of the vasculitis and if other organ systems are involved. For example, if the vasculitis is a manifestation of Henoch–Schönlein purpura, individuals may also experience abdominal pain or blood in the urine.
Cutaneous small-vessel vasculitis
Livedoid vasculitis
Urticarial vasculitis
Systemic vasculitis
Acute cutaneous lupus erythematosus
Bullous small vessel vasculitis
Subacute cutaneous lupus erythematosus
Poikiloderma vasculare atrophicans