When i talk to some1 i get clammy and light headed. feel like mind locks up and could black out. get bit shaky. why might this be?

Soc. anx/depression: Judging from the information you have provided, it sounds like you have symptoms of social anxiety and depression. These commonly occur together. Please see a psychiatrist and take it from there. You should see your family doc to rule out a physical cause. Your psychiatrist should refer you to a therapist for cognitive behavioral therapy and other helpful modalities.

Panic attacks: These are symptoms common to panic attacks. There are different treatments for this depending on how often you feel these symptoms. If only during presentations or meeting new people, there are "as needed" mess for it but if this disrupts daily activities, a person may need daily intake of medications.

Anxiety: Sounds like a social anxiety disorder. Try either a psychologist or medication from your doctor.

Panic attack: A classic symptom of panic attacks is to wake up from sleep with a panic attack. Often the attacks appear to have no trigger, but the underlying dysregulation of the stress response system is easily triggered into a panic attack. If the person also avoids things/activities for fear of having a panic attack, then panic disorder becomes the diagnosis. Seek cognitive behavioral therapy for panic.