by Nomi Berger

Head pressing is the compulsive act of a cat repeatedly and relentlessly pressing her head against a wall or any other hard surface for no apparent reason. Different from head butting -- when a cat rubs or bumps her head, particularly against a person, as a sign of affection -- head pressing is usually a sign of damage to her nervous system.
 
Should you notice your kitty engaging in head pressing, it’s essential to pay a prompt visit to your vet. Provide your vet with a comprehensive history of your cat’s overall health, noting when the head pressing began and what incidents may have preceded it. Describe any symptoms that accompany her head pressing, including abnormal vocalization, compulsive pacing and circling, changes in learned behavior, seizures, damaged reflexes, disorientation and visual impairment. Some of these symptoms may have already manifested themselves physically – from sores on her feet due to compulsive pacing to injuries on her face or head caused by pressing her head against a hard surface for an extended period of time.
 
After first examining her thoroughly, your vet will then focus on uncovering the underlying cause of her behavior by performing a fundic examination of each retina (the layer of the eye that receives and processes images) and the other structures at the back of each eye. This may reveal irregularities in her brain, some infectious disease or an inflammatory disease. Your vet will also have blood work and a urinalysis done, which could reveal a problem with her metabolic system or indicate the presence of toxins in her system. Other tests may include taking her blood pressure to determine if she has high blood pressure and ordering a CT scan and/or MRI scan of her brain.
 
Armed with the results of these various tests, your vet should be able to pinpoint the reason behind your cat’s head pressing. Some of the most common are a brain tumor, prosencephalon disease (damage to the forebrain and thalamus), encephalitis (inflammation of the brain), liver shunts, disorders of the metabolism, toxic poisoning, an infection (rabies and viruses, fungal and parasitic infections) and acute head trauma, possibly resulting from a car accident.
 
The treatment prescribed will depend on the condition causing the head pressing in the first place. Example: serious issues such as brain tumors or encephalitis may require surgery and hospitalization. Example: if your cat has a metabolic disorder, she may be treated with medications on an outpatient basis.
 
But whatever the treatment, your vet will recommend follow-up neurological examinations to monitor the progress of the condition. If, however, no diagnosis can be made, your cat may continue her head pressing. Be certain, though, to alert your vet as to any new behaviors or symptoms that may appear.

While head pressing is serious, the potential for a full recovery, depending on the underlying cause, is possible for many cats. But sadly, for others, the condition can be fatal.

by Nomi Berger
 
Hypertension, or high blood pressure, occurs when a cat’s arterial blood pressure is continually higher than normal. When caused by another disease, it’s known as secondary hypertension, while primary hypertension refers to the disease itself, and it has the potential to affect many parts of a cat’s body including her eyes, heart, kidneys and nervous system.
 
The following are some of the more common symptoms of hypertension: dilated pupils; involuntary rolling of the eyeballs; hemorrhage of the eye; retinal detachment; blindness; bleeding from the nose; circling; disorientation; seizures; a palpable thyroid gland (when she’s hyperthyroid); heart murmurs; blood in the urine; protein in the urine; swollen or shrunken kidneys, and weakness -- on one side of the body or in the legs.
 
While the precise cause of primary hypertension isn’t known, it may have a genetic component. And although studies have varied, one recent study in cats aged from 4 to 20 years old found that 65 percent of those with chronic renal failure and 87 percent of those with hyperthyroidism suffered from mild high blood pressure. On the other hand, secondary hypertension, which accounts for 80 percent of all hypertension cases, may be due to a variety of factors including hormonal fluctuation, hyperthyroidism, renal disease, and quite possibly, diabetes.
 
How, then, is hypertension diagnosed in a cat? The equipment your vet will use is similar to that used in people, with an inflatable cuff placed around one of your cat’s legs or tail. Measuring her blood pressure takes only a few minutes, is pain-free and is extremely well tolerated by most cats.
 
The standards for a cat’s blood pressure are:
150/95 – at this reading or below, there is minimal risk to her and treatment isn’t usually recommended.
150/99 to 159/95 – once again, intervention isn’t routinely recommended at these readings.
160/119 to 179/100 -- treatment IS recommended in order to limit the risk of any damage to her organs.
180/120 – PROMPT treatment is recommended to limit the degree of other more severe complications.
 
Should your cat be diagnosed with hypertension, managing her care has two aims: First, to reduce her blood pressure by using anti-hypertensive drugs -- either a calcium channel blocker or a beta-blocker. As for her diet, your vet will, in all likelihood, recommend she be given foods that are low in sodium. Secondly, to search for an underlying disease that has caused her hypertension by collecting and testing samples of her blood and urine. In some cases, treating the underlying disease may also resolve her high blood pressure.
 
In cats with primary hypertension, it’s usually possible to manage the condition and prevent future complications such as damage to her eyes. In cats with secondary hypertension, the long-term outlook depends on the nature and severity of the disease that caused her high blood pressure in the first place. But whether primary or secondary hypertension, it’s vital to have your vet monitor your cat on a regular basis.