Hi and thanks for the query, The leg pain or weakness deserves that a mechanical process like compression of posture default be excluded. Mild excersing could help. The symptoms of headache and bitter taste in the month, general accompanied by loss of appetite might require an in depth evaluation. The presence or absence of fever is fundamental to be known. A complete clinical review and simple blood tests to screen for an infectious process, like a complete blood count and acute phase reactants (C reactive protein and erythrocyte sedimentation rate) could on their own be enough to make an appropriate diagnosis and draw up a reasonable and scientifically grounded management plan. Thanks and kind regards. Bain LE, MD.