The signs and symptoms of hydrocephalus vary somewhat by age of onset.  Infants Common signs and symptoms of hydrocephalus in infants include: Changes in the head 
An unusually large head
A rapid increase in the size of the head
A bulging or tense soft spot (fontanel) on the top of the head
 Physical signs and symptoms 
Nausea and vomiting
Sleepiness or sluggishness (lethargy)
Irritability
Poor eating
Seizures
Eyes fixed downward (sunsetting of the eyes)
Problems with muscle tone and strength
 Toddlers and older children Among toddlers and older children, signs and symptoms might include: Physical signs and symptoms 
Headache
Blurred or double vision
Abnormal eye movements
Abnormal enlargement of a toddler's head
Sleepiness or sluggishness
Nausea or vomiting
Unstable balance
Poor coordination
Poor appetite
Loss of bladder control or frequent urination
 Behavioral and cognitive changes 
Irritability
Change in personality
Decline in school performance
Delays or problems with previously acquired skills, such as walking or talking
 Young and middle-aged adults Common signs and symptoms in this age group include: 
Headache
Sluggishness
Loss of coordination or balance
Loss of bladder control or a frequent urge to urinate
Vision problems
Decline in memory, concentration and other thinking skills that may affect job performance
 Older adults Among adults 60 years of age and older, the more common signs and symptoms of hydrocephalus are: 
Loss of bladder control or a frequent urge to urinate
Memory loss
Progressive loss of other thinking or reasoning skills
Difficulty walking, often described as a shuffling gait or the feeling of the feet being stuck
Poor coordination or balance
