Pallor

Template:Short description Template:Redirect Template:Missing information Template:Infobox medical condition (new) Pallor is a pale color of the skin that can be caused by illness, emotional shock or stress, stimulant use, or anemia, and is the result of a reduced amount of oxyhaemoglobin and may also be visible as pallor of the conjunctivae of the eyes on physical examination.

Pallor is more evident on the face and palms. It can develop suddenly or gradually, depending on the cause. It is not usually clinically significant unless it is accompanied by a general pallor (pale lips, tongue, palms, mouth and other regions with mucous membranes). It is distinguished from similar presentations such as hypopigmentation (lack or loss of skin pigment) or simply a lightly-melanated complexion.

Causes

Effects of different skin tone on the appearance of pallor

File:Richard Parkes Bonington by Margaret Sarah Carpenter (née Geddes).jpg

Portrait of Richard Parkes Bonington by Margaret Sarah Carpenter. Bonington was suffering from tuberculosis and the paleness of his face was noted by critics.

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• excess estradiol and/or estrone
• osteoporosis
• emotional response, due to fear, embarrassment, grief, rage<ref>Template:Cite journal</ref>
• anorexia
• anemia,<ref>Template:Cite journal</ref> due to blood loss, poor nutrition, or underlying disease such as sickle cell anemia
• iron deficiency
• vitamin B12 deficiency<ref>Template:Cite journal</ref>
• shock, a medical emergency caused by illness or injury
• acute compartment syndrome
• frostbite
• common cold
• cancer<ref>Template:Cite journal</ref>
• hypoglycaemia<ref>Template:Cite journal</ref>
• bradycardia
• panic attack
• medications
  • ketorolac
  • amphetamines
  • ethanol
  • cannabis
• lead poisoning
• motion sickness<ref>Template:Cite journal</ref>
• heart disease
• Peripheral vascular disease
• hypothyroidism
• hypopituitarism
• scurvy
• tuberculosis
• sleep deprivation
• pheochromocytoma
• squeamishness
• visceral larva migrans
• Orthostatic hypotension
• methyldopa
• loss of appetite
• Space adaptation syndrome
• fibromyalgia
• Buerger's disease
• Hypovolemia
• death