Cold/Numbness in left side

Hello....I am not sure what is going on and I need some answers.  I'm a 47 year old female and I'm overweight.   My left leg has been cold and numb on and off.  It sometimes radiates to my left arm and hand.  Also to the left side of my face.  The tip of my tongue is also sometimes numb.  I sometimes feel "off" or foggy.  I have had numerous tests and all have come back normal and negative.  No blood clots,  blood work normal.  I've had MRI's and nothing is showing up.  I have degenerative hips and arthritis of the hips and my left side is worse than the right.  My gait is off due to this.  Could this have anything to do with this.  I have also had panic attacks in the past as well and I take clonazepan as needed for "offness".   Could these be MS symptoms?  I don't know what to do anymore and I'm going crazy.  My doctor told me I might have a B12 deficiency but that came back normal as well.    What is happening to me?  I'm tired of this.  Thank You for your time.  

[DrNavneetMD]

Hi,

Brain fog is a term for the woolly sensation of a physical obstruction to clear thinking in the brain, often extended to apply in general to neurocognitive symptoms experienced by many people who suffer from diseases such as  Chronic fatigue syndrome , fibromyalgia
The defining symptoms of fibromyalgia are chronic, widespread pain and tenderness to light touch. There is also typically moderate to severe fatigue. Those affected may also experience heightened sensitivity of the skin (also called allodynia), tingling of the skin (often needle-like), achiness in the muscle tissues, prolonged muscle spasms, weakness in the limbs, and nerve pain
In addition, many patients experience cognitive dysfunction (known as "brain fog" or "fibrofog"), which may be characterized by impaired concentration and short-term memory consolidation, impaired speed of performance, inability to multi-task, and cognitive overload
Treatment with psychotherapy is sometimes recommended with some medications like NSAIDs, pregabalin may help.

Wheras, MS presents with a variety of symptoms, including changes in sensation (hypoesthesia), muscle weakness, abnormal muscle spasms, or difficulty in moving; difficulties with coordination and balance (ataxia); problems in speech (dysarthria) or swallowing (dysphagia), visual problems (nystagmus, optic neuritis, or diplopia), fatigue and acute or chronic pain syndromes, and bladder and bowel difficulties. Cognitive impairment of varying degrees are also common. Neuropathic pain is the most common, distressing and intractable of the pain syndromes in MS. This pain is described as constant, boring, burning or tingling intensely. It usually occurs in the legs. Paraesthesias include pins and needles; tingling; shivering; burning pains; feelings of pressure; and areas of skin with heightened sensitivity to touch.
For a clear cut diagnosis and evaluation consult your neurologist.
Bye Take care