Bleeding and bruising - DermNet A bruise, also known as ecchymosis or a contusion, occurs when small blood vessels (capillaries) under the skin bleed, while the overlying skin remains intact The injury causes blood to leak and collect near the skin surface, causing bluish-black skin discolouration
Senile purpura - DermNet What is senile purpura? Senile purpura is a common, benign condition characterised by the recurrent formation of purple ecchymoses (bruises) on the extensor surfaces of forearms following minor trauma
Cellulitis: Symptoms, Causes, Treatment and more - DermNet Cellulitis is a common bacterial skin infection It can result in localised redness, pain, swelling, and systemic symptoms - see images below Without treatment, cellulitis can be life-threatening
Achenbach syndrome: Painful Blue Finger - DermNet Achenbach syndrome is a painful subcutaneous bruise resulting from damage to small veins in a finger, which causes it to swell and turn blue It can be treated by cooling and avoiding triggers
Postinflammatory hyperpigmentation - DermNet What is postinflammatory hyperpigmentation? Postinflammatory pigmentation is temporary pigmentation that follows injury (eg, a thermal burn) or inflammatory disorder of the skin (eg, dermatitis, infection)
Different causes of purpura – 10 cases - DermNet This quiz tests your ability to recognise different causes of purpura Purpura is due to haemorrhage from small blood vessels, and there is as wide differential diagnosis
Target and targetoid lesions - DermNet What is a target lesion? A target lesion is a round skin lesion with three concentric colour zones: A darker centre with a blister or crust
Subungual haemorrhage - DermNet What is the differential diagnosis for subungual haemorrhage? The differential diagnoses to consider for nail pigmentation include: