Symptoms of the type B flu include runny nose, sore throat, fever, watery eyes, joint pain, red skin and loss of appetite, according to Right Diagnosis from Healthgrades. Secondary complications may come in the form of pneumonia or febrile seizures in children.
Right Diagnosis mentions that type B flu is a type of influenza virus. It is sporadic and does not spread on a pandemic level. It is only an epidemic-based illness, but the virus is highly contagious. WebMD notes that type B is not as dangerous as type A, but it can be very harmful in certain cases. Right Diagnosis adds that the virus mutates rapidly, which is why people need regular vaccinations to remain protected. However, Wikipedia notes that the virus evolves slower than type A but faster than type C.
Right Diagnosis claims that the virus can be especially hard on the young and elderly, and the symptoms depend on the individual. For example, a person can exhibit constitutional symptoms, such as sore muscles and headaches, while respiratory problems are also symptomatic of the virus.
Right Diagnosis reports that type B complications are secondary illnesses associated with influenza, but these symptoms are more dangerous. Type B can also exacerbate certain preconditions, such as asthma, heart conditions and chronic obstructive pulmonary disease. Death is likely in some instances, and the virus can have a negative effect on pregnant mothers and the fetus.