Now here is another interesting case presented by Dr Hitesh and Dr Anuraga in the post https://hitesh116.blogspot.com/2020/05/12may-2020-elog-medicine-intern.html?m=1 An 18 year old patient came with the following chief complains: Weakness of both lower limbs since 20 days Bilateral edema in lower limbs. As we take a look at the typical history of weakness which is more marked in the proximal limb suggests MYOPATHIC WEAKNESS Differential diagnosis https://en.wikipedia.org/wiki/Myopathy#Differential_diagnosis At birth None as systemic causes; mainly hereditary Onset in childhood Inflammatory myopathies – dermatomyositis, polymyositis (rarely) Infectious myopathies Endocrine and metabolic disorders – hypokalemia, hypocalcemia, hypercalcemia Onset in adulthood Inflammatory myopathies – polymyositis, dermatomyositis, inclusion body myositis, viral (HIV) Infectious myopathies Endocrine myopathies – thyroid, parathyroid, adren...