 [ Symptoms ] what can cause a 10 year old boy is head of hair to change from black to reddish brown in a matter of hours  my 10 year old was playing in the back yard but then started having a slight headache when he came inside i notice his hair on one side was changing in color from black to light brown i also notice he had what looked like 2 mosquito bites on his arms he had no temperature but was feeling a bit fatigued but we went on to basketball practice none the less by the end of the evening his entire head of hair was now the color reddish brown [ Disease ] i would suggest you to first of all go for an x ray and then you can decide how to proceed for now you can take pain relievers muscle relaxant and do cool packs on the painful area you can wear orthotics in your shoes to support and relieve pain avoid exerting too much and loose weight if you are over weight hope this helps