Kwashiorkor is a form of malnutrition that most often affects children in developing regions of the world where there is famine or a limited food supply.
The main sign of kwashiorkor is having too much fluid in body tissues, causing swelling under the skin (oedema). It usually begins in the legs, but can involve the whole body, including the face. The following symptoms can also be present:
red, inflamed patches of skin that darken and peel or split open
dry, sparse, brittle hair that may turn reddish yellow or white
drowsiness and tiredness
irritability
failure to grow
loss of muscle mass
an enlarged tummy ('pot belly')
regular or persistent infections
ridged or cracked nails
If the condition is left untreated for too long, it can be fatal.