He or she will likely start with a physical exam, specifically checking for swollen lymph nodes. (health.com)
If the disease is contracted, infected people may feel as if they have the flu, with swollen lymph glands or muscle aches and pains that last a month or more. (americanhumane.org)
Symptoms include swollen lymph nodes, fever, headache, fatigue, and diminished appetite. (petsmagazine.com.sg)