doctors plz Help my friend??

Question

from past 3 weeks a friend of mine has been having the following symptoms:
1.multiple joint pains
2.throat pain
3.evening rise in temperature of around (100.5F) (lowgrade)
4.tiredness
5.pain in the lower back espically after taking rest

the local doctor said that its viral infection and gave painkillers and paracetemol but what viral infection has evening rise in temp.
plz this is serious i searched the web but i could not find much.finally i really hope there are doctors visiting yahoo answers.
plz help if u can

Answer 1

Does the doctor know that your friend is still symptomatic? What is your friend's age? A young person could have mono. For an older person other diagnoses are more likely. He or she needs to be re-evaluated, probably with some blood work and perhaps some x-rays or other imaging studies.

A possibility of one of the auto-immune diseases: rheumatoid arthritis, Ankylosing spondylitis, polymyalgia rheumatica??? A malignancy is an outside possibility. This is not to scare you, but to urge you to get your friend back under appropriate medical care.