<s>[INST] Hi, very recently my husband got diagnosed as suspected CIDP . His arms and lags become very week. Doctor tapped the spine and collect the fluid, but found the protein level within normal limit. His muscles in arms become very loose, soft which is not looking normal. In the last 3 months, he fell down 3 times, which was manageable for any normal human being. I need to be sure about his health status and about the available treatment facility. Now, he has given prednisone with a high doze (60 mg/day). [/INST] Hi, Thank you for posting your query. CDP is characterized by weakness of both arms and legs. The affected limbs feel loose and symptoms progress over time. Nerve conduction studies show evidence of declination (damage to nerve covering called myelin sheath). CSF analysis shows high protein.  If there is any doubt in diagnosis, biopsy of the rural nerve (nerve located near ankle) is done. For proven CDP, high dose steroids are accepted as first line treatment. Cases that do not improve with steroids may be treated with immunoglobulin injections or plasma exchange. Best wishes, Chat Doctor.  </s>