Hi, Based on the details you have been diagnosed with relapsing remitting Multiple sclerosis (RRMS) Exhaustion is common during summer and worsening symptoms ( called as Uhthoff s phenomenon (also known as Uhthoff s syndrome, Uhthoff s sign, and Uhthoff s Symptom) is the worsening of neurologic symptoms in multiple sclerosis (MS) and other neurological, demyelinating conditions when the body gets overheated from hot weather, exercise, fever, or saunas and hot tubs. It is possibly due to the effect of increased temperature on nerve conduction.) Memory and balance also affected , because disease is prone to produce relapses. You should consult neurologist for clinical examination and require repeat MRI brain with contrast . You also need to be on disease modulating drugs like interferon if you are not on that. Hope this will help you Regards Dr Sandhya Manorenj Neurologist Hi Tech city Hyderabad