here-
Symptoms in adults and older children may include:
a constant generalised headache,
confusion,
a high temperature, although hands and feet may be cold,
drowsiness,
vomiting,
stomach pain, sometimes with diarrhoea,
rapid breathing,
neck stiffness - moving the chin to the chest will be painful at the back of the neck,
a rash of red or purple spots or bruises (or darker than normal, in dark skins) that does not fade when you press a glass tumbler or finger against it ? this may not be present in the early stages,
joint or muscle pain, and
sensitivity to bright lights, daylight or even the television.
Symptoms in babies and infants may include:
high temperature, fever (possibly with cold hands and feet),
vomiting and refusing feeds,
high pitched moaning or whimpering cry,
blank staring expression,
pale itchy complexion,
floppiness,
dislike of being handled,
fretful,
neck retraction with arching of back,
convulsions,
lethargic and difficult to wake, and
tense or bulging fontanelle (soft spot on head).