Darkening : Medical Symptom Description

Darkening: Darkening is listed as an alternate name or description for symptom Dark skin. For a medical symptom description of 'Darkening', the following symptom information may be relevant to the symptoms: Dark skin (symptom). However, note that other causes of the symptom 'Darkening' may be possible.
Dark skin (symptom): Darkening of the skin as a symptom
Dark skin (symptom): There are various types of skin darkening. One type is hyperpigmentation that occurs when certain skin cells release more pigment (dark color). Darkening of the skin due to "blueness" is called cyanosis (see also blue skin) or purple skin. Darkening may sometimes occur from redness or bruising. Other types of skin darkening can result from sun exposure, certain dietary items, and certain chemicals; see also skin color changes for particular colors such as redness, blueness and other skin color changes. Skin darkening, color changes, or hyperpigmentation can be the symptom of some severe diseases (e.g. Addison's, scleroderma), and any such symptoms require prompt professional medical investigation.

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