Give 1mg of Benadryl per pound such that if your dog weighs 30 pounds, you should give it 30 mg of Benadryl. Talk your veterinarian - while antihistamines are generally safe, there are the potential for side effects particularly if your dog has chronic organ failure (renal failure, liver failure, congestive heart failure, etc.).
1 Encephalitis is inflammation of the brain. 2  Meningitis is inflammation of the membranes (called meninges) that surround the brain and spinal cord.  Both encephalitis and meningitis can be caused by bacteria or viruses, and rarely a fungus, or be noninfectious.
1 Meningitis is inflammation of the membranes (called meninges) that surround the brain and spinal cord. 2  Both encephalitis and meningitis can be caused by bacteria or viruses, and rarely a fungus, or be noninfectious. 3  Headache and fever are the most common symptoms of encephalitis and meningitis.eningitis Incubation Period. The incubation period for bacterial meningitis, the most serious types of meningitis, is about three to five days after initial contact with the microbe.