Hi,
Noted your history about pain on the lower rib cage, itching around stomach and back, sore joints, using L Glutamine,
Endoscopy is normal.
The commonest cause I can think about the pain in rib cage is
costochondritis. you can get this confirmed by the following ways:
Consult your Doctor for proper clinical examination and see if there is local tenderness over the lower ribs, rule out internal problems of lung and pleura by X-ray chest.
The itching could have been due to
dermatitis or
fungal infection or allergy to something and treated as per the cause found.
Relevant tests of blood may help for sore joints like
Rheumatoid arthritis.
Symptomatic and supportive treatment to be started under the guidance of your Doctor.
Specific treatment as per the causes found.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. T. Chandrakant, ENT & General Surgeon