I am a 28 year old male and since last once month I have been experiencing extreme lower thigh and limb muscular weakness and fatigue after ejaculation. Since then I have had deteriorating muscle strength in my legs and increasing fatigue. Earlier I used to feel weak after ejaculation, but I guess that is normal. But these days after ejaculation or masturbation, I feel my mind not being at ease and after a few minutes I start to expericence severe muscular pains and stiffness in my limbs. I'm suffering from extreme fatigue these days. Could it be some kind of harmonal imbalances? I have checked up with my GP for possible causes(any viral infections, thyroid, rheumatoid disorders, gravis, muscle wastage, anxiety & depression disorders) and so far everything has come out normal. I am at loss to find out what is causing this muscular pains in my legs triggered a month ago by ejaculation. The pain is quite similar to being as if I have run on a treadmill all day long. I will be meeting a neurologist next week.