Nervous Feeling

I have been experencing a "nervous feeeling" almost of being on edge.  These feelings will come and go and leave me in a state of almost pain.  My doctor explains that it may be my body releasing hystamine.  I have been on an antihystamine since then  for 1 week.  Do you have any other possoblities that this may be.  It keeps me up and night, and is litteraly driving me crazy.  I can almost describe it as the feeling you would feel right before you get in a car wreck.

[HFHS MD - RG]

Your description of nervous feeling is similar to what we call anxiety attack.

An anxiety attack is defined as a discrete period of intense discomfort accompanied by four or more of the following symptoms that develop abruptly and reach a peak within ten minutes- palpitations, sweating, trembling, shortness of breath, chest pain, nausea, dizziness, fear of losing control, fear of dying, hot flashes. Panic attacks can occur in mental disorders other than Panic Disorder. Some panic attacks do not easily fit easily into the distinction between unexpeced and expected, and these attacks are referred to as situationally predisposed; they may or may not occur when a patient is exposed to a specific trigger, or they may occur either immediately after exposure or after a considerable delay.

It is not uncommon for panic attacks to last for 20-30 minutes but usually last less than an hour. Symptoms of panic attacks may mimic some medical conditions like anemia, hypoglycemia, hypothyroidism, among others.

It is best that you see a mental health profesional for an evaluation.