Rheumatic fever forced him to abandon his studies in 1898 and it left him partially incapacitated for a time.
en.wikipedia.org Such bodily symptoms range from mere sleepiness to general sickness or debility, along with a host of more specific symptoms: weakness in the knees, pain in the limbs, and fever.
en.wikipedia.org Crying, sleeplessness, restless sleep at night, and mild fever are also associated with teething.
en.wikipedia.org Common symptoms include fever, headache, body aches, fatigue, back pain and occasionally a skin rash, swollen lymph glands and eye pain.
www.heraldbanner.com Constitutional symptoms such as fever, malaise, loss of appetite and weight loss are also caused by cytokines released into the blood stream.
en.wikipedia.org