I got this article from an Anxiety forum and for me had been a life safer since I suffer from Health Anxiety and every pinch that I have in my body I think is something very bad. This article had ease my worries.

I hope it can be helpful :)

Anxiety & Panic Attacks Symptoms


It is not important to try and understand the physiology of the human body but it is important to remember that each of the anxiety symptoms you experience can be explained. Do not dwell on what you are feeling, instead, project yourself into more useful subjects, do something constructive, exercise, learn a skill or craft and escape the body trap.
The following list of anxiety symptoms includes the most common ones reported by actual anxiety sufferers. Whilst the list is fairly comprehensive, there may be symptoms that you experience that are not listed; this does not mean that you are more ill or suffering from something else, we are all biologically different in many ways and some people simply react differently during anxiety.

Smothering sensations and Shortness of breath
These sensations are amongst the more distressing anxiety symptoms. Sometimes it feels as if your chest will not expand to accommodate the air your body needs, other times it feels as if someone is pushing a pillow into your face. The one thing to remember should you experience this is that it is only a sensation caused by exaggerated nerve impulses. These symptoms will not and cannot harm you; you will not stop breathing, pass out or suffocate.

Racing heart, slow heart beat, palpitations
Anxiety releases adrenaline into the blood stream making the heart race and feel as if it is missing beats, (palpitations). This is perfectly natural and will not and cannot harm you in any way. Later I will discuss methods you can use to help stop these feelings. A slow heart beat is also a common feature of anxiety, again it does not mean that your heart will stop beating, it may feel odd and alarming but again do not give it any credibility and it will go away.

Chest Pain
Caused by muscle tension, chest pains can make you feel very scared. The initial reaction of anyone with anxiety who gets pains in their chest is that they are dying of a heart attack. This is not true. Heart pain is very different to this pain and very often does not start in the chest. Deep breathing and relaxation exercises are a very effective way of diminishing these unpleasant symptoms. If you can get somebody to massage your upper back, shoulders and chest, it will help to relax tired and achy muscles.

Lump in throat & Difficulty swallowing
Globus Hystericus is the correct term for this symptom. It is caused by the muscles in the throat contracting due to anxiety or stress. Sometimes it feels like you cannot swallow anything and trying to makes it worse. This is another example of a symptom, which will improve if you give it no credibility. It is totally harmless and will not cause you to stop breathing, eating or drinking, it is just very unpleasant.

Skin losing colour (blanching)
As blood is diverted to the muscles during the 'fight or flight' response, the fine blood vessels in your skin that gives the skin that pink, healthy colour receive reduced blood flow and the skin loses some of its colour. It is not dangerous and will return to normal as the body starts to normalise after an attack. Some people with generalised anxiety can look a little pale most of the time, again this is quite normal and will return to normal.

Sweating
Sweating is a normal bodily reaction and is designed to reduce the body temperature. As the body heats up sweat is released onto it through sweat glands. As the sweat evaporates it takes heat with it, cooling the body. During periods of anxiety the body is preparing itself for either flight or fight and releases sweat to cool the impending exertions. As the anxiety subsides sweat levels return to normal.

Shaking or shivering (Visibly or internally)
We all shake or shiver when we are nervous or cold. Shaking is a normal reaction to fear and/or a drop in body temperature. Shaking occurs when the muscles spasmodically contract creating friction between muscles and other body tissues. This friction creates heat which raises body temperature. During anxiety it is quite normal to experience shaking or shivering. It will pass.

Neck & shoulder pain & numbness in face or head
The blood vessels and nerves, which supply the face and head, originate in the neck and shoulders. Many of these nerves and blood vessels are routed across the head to the face. When the body is under stress these areas of the body are usually the first to become tense. Facial numbness can be very disturbing but is usually nothing to worry about and is usually the result of this tension.

Rapid gastric emptying
This can be a very unpleasant side effect of both anxiety and tranquilliser use. This condition causes the sufferer to feel full very early on in a meal, sometimes making them feel as if they cannot breathe. Then soon after eating they can experience diarrhea and feel as if their whole digestive system is emptying very quickly indeed.

Indigestion, heartburn, constipation and diarrhea
During periods of anxiety the body diverts blood from various parts of the body to the muscle tissues in order to supply them with the oxygen needed by them during the flight or fight response. One of the main areas where blood is used most is around the digestive tract. Blood is sent there to absorb nutrients from the food we eat. As blood is diverted away from the stomach during anxiety, the digestion slows and the muscles around the stomach can become knotted. This can cause indigestion, heartburn and diarrhea or constipation.

Sexual Dysfunction
Impotency, or failure to achieve or maintain an erection, effects many men for many reasons, sometimes there is a physical reason for this but more often than not there is a psychological element.

Symptoms of urinary tract infection
Medication can have many and some times quite obscure side effects including the symptoms of a urinary tract infections. It is always advisable to get these things checked out by your doctor but even if you do have an infection it can be easily treated. Drinking plenty of water is always advisable to maintain good, general health but even more so when the body is under stress.

Skin rashes
Skin rashes, spots or dryness are all very common symptoms of anxiety and stress. It is quite common to get an eczema like rash around the nose, cheeks and forehead. They are nothing to worry about and usually disappear when you start to feel better.

Weakness in arms & tingling in the hands or feet
The flight or fight response is an intense reaction and causes many systems of the body to react. Circulation, blood oxygen and blood carbon dioxide levels change and muscle tension is altered in preparation for action. All of these bodily changes have a profound effect on bodily sensations, feeling week in the extremities, (arms, hands, legs or feet) is one of these sensations.
Tingling is usually caused by the pooling of blood carbon dioxide in the limbs, shaking the hands, arms, legs and feet can help increase circulation to these areas. These symptoms are not harmful and will return to normal. Light exercise is very helpful in reversing these sensations. THEY DO NOT MEAN YOU ARE EXPERIENCING A STROKE OR ANY OTHER NEUROLOGICAL CONDITION!

Electric shock feeling anywhere in the body
The nervous system is a very complex network of electrically charged nerves which are found in every square centimeter of your body, around every organ, muscle and across your skin, the largest organ in the body. Abnormal nerve impulses due to anxiety can cause a vast array of strange sensations; although quite harmless these can be very disturbing.

Dry mouth
As fluids are diverted for use in other parts of the body during anxiety, the mouth becomes dry. Sip water or suck sweets to lubricate your mouth. In extreme cases your doctor can prescribe a liquid to do this but it is expensive. It cannot harm you and will go away after the anxiety subsides.

Insomnia
One of the more distressing effects of anxiety, insomnia is the inability to fall asleep or to remain asleep. It is important to regain regular sleep patterns as lack of sleep can lead to disturbing symptoms.

Nightmares
Dreams and nightmares tend to mimic what is going on in our daily lives. If we are relaxed and contented we have pleasant dreams and usually do not remember them. If we are disturbed or confused our dreams are more likely to be too. Nightmares are unpleasant but harmless, the more you master good sleep and practice breathing and relaxation exercises the better your dreams will become.

Fears of going mad or losing control
We all have a fear of going mad or losing control but rest assured you are not going mad. Going mad is not a conscious act; those who are suffering from severe mental illness are unaware of their journey into it. You are not going mad. Confused nervous messages to the brain along tired nerves in a tired body do not constitute madness.
Thoughts are an unconscious product of brain activity. If you are anxious, angry, sad or stressed your thoughts are affected, not only by mood, but also by your physical body chemistry. Blood oxygen levels can affect brain activity and the central nervous system, as can many other bodily chemicals like adrenaline, hormones and even vitamins. These un-pleasant thoughts, emotions and totally irrational fears are not harmful to yourself or others. Any thoughts of harming yourself or other people are perceived only. As you body becomes more relaxed and less anxious your thought processes will return to normal.

Increased depression & suicidal feelings
Depression is a word that is commonly misused to describe a variety of conditions. I hear many people in every day life who say, "I am depressed, I feel terrible, I am so fed up". This is, in most cases, not depression. Depression is a series of chemical imbalances that create a clinical illness that has strong links with anxiety disorders and can be a side effect of them. Anxiety has many features of depression and can mimic it quite strongly. When someone goes to the doctor complaining of feeling run down and fed up, it is all too easy to write a prescription for Prozac, Seroxat or another anti-depressant. I wonder how many people are on anti-depressants who just needed to reassess and restructure their lives.

Aggression
When you feel tired, ill, fed up and held back by your condition you are bound to feel angry. One of the main causes of true anger is actually sadness. Think back to a situation that has made you feel anger, if you dissect that event you might find that the true reason for feeling so angry was a feeling of sadness. Aggression is a normal reaction to fear also, the fight or flight response prepares us to either run or fight, sometimes to fight may seem to be the best response.

Symptoms like 'flu'
Influenza causes the body to release anti-bodies into the blood stream to attack the virus. This combination of anti-bodies and infection makes the body feel weak, sweaty and painful. Anxiety can have a similar effect, weakening the muscles, making you clammy and achy. Believe it or not the more you do physically the better this will become.

Distorted vision
In order to prepare the body for impending danger, adrenaline release causes many physical changes. During the anxiety response the body prepares the eyes to notice any slight movements; it does this by dilating the pupils allowing more light to enter. This is why anxious people become more sensitive to bright light and often wear sunglasses to minimize the eyestrain it causes.

Disturbed hearing
This is called tinitus and is usually experienced as whistling or screeching noises in either or both ears.

Hormone problems
Anxiety can affect various systems of the body, one of which is the endocrine system. This system is responsible for balancing the glands, which secrete hormones in the body. Although these glands secrete the hormones needed by the body, they do not control the levels of these chemicals, this is done by the brain. Disturbed messages in the brain and nervous system can cause slight irregularities in the secretion of these chemicals.
When anxiety levels return to normal so will the hormone levels. There are few examples where these hormones cause serious problems and if they do your doctor can correct them.
Women may find that their menstrual cycle is temporarily effected and men may find that they have mood swings whilst testosterone levels are affected.

Headaches & feelings of having a tight band around head
As discussed earlier, tension in the neck and shoulders can cause immense discomfort, migraine and numbness. The feeling of having a tight band around your head is caused by muscular tension in the sheath of muscles covering the skull. Restricted blood vessels and nerves within this tissue can cause very severe symptoms including pain in the eyes, face and teeth.

Sore eyes
Reduced lubrication in the eyes when body fluids are diverted elsewhere during anxiety causes the eyes to feel sore, dry and painful.

Agoraphobia
Agoraphobia is a natural response to anxiety and self-preservation. If we feel threatened we tend to retreat to somewhere safe, like a tortoise into its shell. In anxiety it is important to gain control of this response as soon as you feel it developing. Avoidance of situations is not an effective tool in the fight against agoraphobia.

Hallucinations
Mostly experienced by people in withdrawal, hallucinations can be very frightening indeed if you do not understand what they are and where they come from. Hallucinations are another example of transient symptoms. If you are in withdrawal they will pass, if you are not in withdrawal consult your doctor, as they may be a side effect of the drugs that you have been prescribed.

Creeping or pins and needles sensations in The skin
The nerve endings in your skin are alive with electrical impulses, these can feel like creeping sensations, pins and needles or tickling, they are the result of confused nerve impulses and cannot harm you.

Increased sensitivity to light, sound, touch, and smell
All of these sensitivities are to prepare your senses to see, smell, hear and feel more when in impending danger during the fight or flight response. All of these feeling are unusual but not dangerous, they are temporary and will return to normal as your anxiety levels reduce.

Hyperactivity
Hyperactivity is a way of describing a range of symptoms that cause you to feel as if you need to talk faster and do things faster. It can make you feel confused and irrational and can make you do things that you would not usually do. This is a common feature of anxiety and drug withdrawal and will pass in time.

Dramatic increase in sexual feelings
As the brain copes with disturbed and confused messages from all around the body, some of the mind's thought processes can become a little distorted or exaggerated. Sexual thoughts and emotions are typically very strong even when in good health, they are what drive the attraction mechanism when we meet people we find attractive and create the sexual feelings we feel for some people.

Pain in the face or jaw that resembles a toothache
The term 'face ache' comes from this feature of anxiety. Most of this symptom is caused by tension, not only in the face, neck and shoulders, which can refer pain to the jaw and teeth, but also in the jaw itself.

Derealization and depersonalization
These are both symptoms, which affect the way you experience yourself. derealization is the sensation that you and everything around you is not real or dreamy, as if you are seeing everything through a fog or some kind of filter. It has been noticed that people experience both depersonalization and derealization during panic. It seems that some people dissociate first which then causes panic and derealization.


Anxiety Symptoms: The Complete List


Body:
Burning Sensations throughout the body
Chronic Fatigue
Electric shock feeling
Excess of energy, you feel you cant relax
Feel like you are going to pass out or faint
Feeling cold or chilled
Hyperactivity, excess energy
Increased or decreased sex drive
Muscle twitching
Neck, back, shoulder pain, tightness/stiffness
No energy, feeling lethargic, tired
Numbness or tingling in hands, feet, face, head, or any other places on the body
Persistent muscle tension, stiffness
Sore or tight scalp or back of the neck
Startle easily
Sweating, uncontrollable profuse sweating
The floor feels like it is moving either down or up for no reason
Trembling or shaking
Urgency to urinate, frequent urination, sudden urge to go to the washroom
Warm spells
Weak legs, arms, or muscles

Chest:
Chest pain or discomfort
Concern about the heart
Feel like you have to force yourself to breath
Find it hard to breath, feeling smothered, shortness of breath
Frequent yawning to try and catch your breath
Heart beating hard or too fast, rapid heartbeat, palpitations
Heart - Irregular heart rhythms, flutters or skipped beats, tickle in the chest that makes you cough

Fears:
A heightened fear of what people think of you
Afraid of being trapped in a place with no exits
Constant feeling of being overwhelmed.
Fear of being in public
Fear of dying
Fear of losing control
Fear of impending doom
Fear of making mistakes or making a fool of yourself to others
Fear of passing out
Fear that you are losing your mind
Fears about irrational things, objects, circumstances, or situations
Fears of going crazy, of dying, of impending doom, of normal things, unusual feelings and emotions, unusually frightening thoughts or feelings
Heightened self awareness, or self-consciousness
Need to find nearest washrooms before you can feel comfortable
Need to seat near exits

Head:
Burning, itchy, tight scalp
Dizziness or light-headedness
Frequent headaches, migraine headaches
Feeling like there is a tight band around your head, pressure, tightness
Head, neck or shoulder pain, tightness/stiffness
Giddiness
Shooting pains in the face
Shooting pains in the scalp or head
When you close your eyes you feel like are beginning to, or will, float upwards
Sore jaw that feels like a tooth ache
TMJ (Temporo-Mandibular Joint) - clenching of the jaw or grinding of the teeth

Hearing:
Frequent or intermittent reduced hearing or deafness in one or both ears
Low rumbling sounds
Ringing in the ears, noises in the ears, noises in the head

Mind:
Deja Vu, a feeling like you've done or experienced something before
Desensitization, depersonalization
Fear of going crazy
Fear of losing control
Fear of impending doom
Feelings of unreality
Frequent feeling of being overwhelmed, or that there is just too much to handle or do
Having difficulty concentrating
Obsession about sensations or getting better
Repetitive thinking or incessant mind chatter
Underlying anxiety, apprehension, or fear
You often feel you are carrying the world on your shoulders

Mood / Emotions:
Always feeling angry and lack of patience
Depression
Dramatic mood swings (emotional flipping)
Emotionally blunted, flat, or numb
Emotional "flipping" (dramatic mood swings)
Emotions feel wrong
Everything is scary, frightening
Feeling down in the dumps
Feeling like things are unreal or dreamlike
Frequently being on edge or 'grouchy'
Frequently feel like crying for no apparent reason
Have no feelings about things you used to
Not feeling like yourself, detached from loved ones, emotionally numb
Underlying anxiety, apprehension, or fear
You feel like you are under pressure all the time

Mouth/Stomach:
A tinny, metallic or ammonia, or unusual smell or taste
Aerophagia (swallowing too much air, stomach distention, belching)
Choking
Constant craving for sugar or sweets
Constipation
Diarrhea
Difficulty swallowing
Dry mouth
Feeling like you cant swallow properly or that something will get caught in your throat
Feeling like your tongue is swollen
Frequent upset stomach, bloating, gaseous
IBS
Lack of appetite or taste
Lump in the throat, tight throat, something stuck in your throat
Mouth muscles twitching/jumping
Nausea or abdominal stress
The thought of eating makes you nauseous
Tight throat, lump in throat
Tongue twitching
Urgency to urinate, frequent urination, sudden urge to go to the washroom
Vomiting

Skin:
Burning skin sensations, skin sensitivity
Skin problems, infections, rashes

Sleep:
Difficulty falling or staying asleep
Frequent bad, bizarre, or crazy dreams
Hearing sounds in your head that jolt you awake
Insomnia, or waking up ill in the middle of the night
Jolting awake
Waking up in a panic attack
You feel worse in the mornings

Sight:
Distorted, foggy, or blurred vision
Dry, watery or itchy eyes
Eye tricks, seeing things our of the corner of your eye that isnt there, stars, flashes
Eyes sensitive to light
Spots in the vision
Flashing lights when eyes are closed
Your depth perception feels wrong

Touch:
Burning skin sensations, skin sensitivity
Feeling cold or chilled
Numbness
Pain
Tingling, pins and needles feelings

Other symptoms are described as:
Being like a hypochondriac, muscle twinges, worry all the time, tingles, gagging, tightness in the chest, tongue twitches, shaky, breath lump, heart beat problems, head tingles, itchy tingling in arms and legs, and so many more.

In addition to these symptoms, you may also find yourself worrying compulsively about:
Having a heart attack
Having a serious undetected illness
Dying prematurely
Going insane or losing your mind
Harming yourself or someone you love uncontrollably
Being embarrassed or making a fool out or yourself
Losing control
Fainting in public
Not breathing properly
Choking or suffocating
Being alone