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Most bruises occur close enough to the epidermis such that the bleeding causes a visible discoloration. The bruise then remains visible until the blood is either absorbed by tissues or cleared by immune system action. Bruises which do not blanch under pressure can involve capillaries at the level of skin, subcutaneous tissue, muscle, or bone ...
In medicine, a sign is an objective piece of data that can be measured or observed, as in a high body temperature (fever), a rash, or a bruise. [6] A symptom, by contrast, is the subjective experience that may signify a disease, illness or injury, such as pain, dizziness, or fatigue. [7]
Erythema nodosum (EN) is an inflammatory condition characterized by inflammation of subcutaneous fat tissue, resulting in painful red/blue lumps or nodules that are usually seen symmetrically on both shins, on the thighs, arms, and elsewhere. [1]
These signs may be visible, such as a rash or bruise, or otherwise detectable such as by using a stethoscope or taking blood pressure. Medical signs, along with symptoms, help in forming a diagnosis. Some examples of signs are nail clubbing of either the fingernails or toenails [8] or an abnormal gait. [9]
Bruising, particularly purpura in the forearms and petechiae in the feet, legs, and mucous membranes, may be caused by spontaneous bleeding under the skin. [8] [9] Eliciting a full medical history is vital to ensure the low platelet count is not secondary to another disorder.
Rash due to measles. Many skin conditions affect the human integumentary system—the organ system covering the entire surface of the body and composed of skin, hair, nails, and related muscle and glands. [1] The major function of this system is as a barrier against the external environment. [2]
Systemic amyloidoses affect more than one body organ or system. Examples are AL, AA and Aβ2m. [30] Localised amyloidoses affect only one body organ or tissue type. Examples are Aβ, IAPP, Atrial natriuretic factor (in isolated atrial amyloidosis), and Calcitonin (in medullary carcinoma of the thyroid) [30] Another classification is primary or ...
It can be caused by infection, massage, electrical treatment, acne medication, allergies, exercise, solar radiation (), photosensitization, [3] acute radiation syndrome, mercury toxicity, blister agents, [4] niacin administration, [5] or waxing and tweezing of the hairs—any of which can cause the affected capillaries to dilate, resulting in redness.