system
On and off sweaty cold hands and feet, excess saliva, weak limbs with tingling, fatigue, depression, anxiety.   Advice
human
every other month or so I get sweaty cold hands and feet for a couple days.i also excess saliva at corners of mouth.my legs and arms are weak and sometimes tingle.im fatigued all the time. I also have depression and some anxiety.my base of neck sometimes gets really hot feeling and sore at times.also have lower back pain if stand for too long.
gpt
Sudden onset of a set of symptoms like sweating, cold hands & feet, tingling/ numbness, anxiety may be a panic attack. They typically occur suddenly without a warning and will settle in 15 to 20 minutes time. This may lead to depression and a fear of having another attack at any time. During the attack you may also feel like you will lose control of yourself or you may be getting a fear that it is a heart attack. You may consult a psychiatrist for these symptoms. Panic disorder is a highly treatable condition. Your psychiatrist may also prescribe tests to rule out medical conditions that  may cause panic, such as hypertension, hyperthyroidism, etc. Hope this helps.