Feline hyperesthesia syndrome (FHS) is an unusual medical condition that affects the brain and causes some very strange symptoms in cats. It can affect felines of all ages, but it is most common in adult cats and the cause is still somewhat of a mystery. Some of the experts suspect that this condition could be caused by seizures, a type of obsessive-compulsive disorder or a type of brain disorder.
Veterinarians describe the condition as a rippling motion that starts at the shoulders of the cat and runs all the way down to its tail, which explains why it’s sometimes called “rippling skin syndrome” or “twitchy cat syndrome.” Hyperesthesia is the word used to describe a heightened sensitivity that affects the senses and in this case, it’s the skin. You can actually see the skin moving in some cats but it can be hard to see in others, depending on the thickness and length of the cat’s fur.
Symptoms of the condition may occur in any breed or sex of cat. Even so, Abyssinians, Siamese, Burmese and Himalayan purebred cats seem to be predisposed to develop hyperesthesia.
FHS symptoms are occasional, so cats may act normally for long periods of time, eating their nutritious CANIDAE cat food and drinking plenty of water, but then an owner will notice some of the following symptoms.