Caffeine allergy symptoms may appear in the form of physical as well as mental disorder causing great agony and distress for the person who is experiencing those symptoms. The symptoms may vary from individual to individual, and can range from mild to severe depending upon a number of circumstances .The caffeine allergy symptoms can attack very suddenly or it can also take quite a long time to develop and show the symptoms. In some people the symptoms can be so subtle that it becomes very hard to notice and diagnose. They will only become conscious of the symptoms when they will not experience the symptoms.

Some common symptoms of caffeine allergy may include:

• Itchy skin
• Tingling in the mouth
• Minor swelling of the mouth
• Dizziness
• Restlessness
• Mood swing
• Over excitement
• Attention deficiency
• Agitation
• Fever
• Confusion
• Muscle weakness

In some severe cases a person allergic to caffeine can develop some serious behavioural problems which are quite similar to mental disorder. They include:

• Delusion
• Paranoia
• PMS
• TMJD

However, people with caffeine may not experience all these problems together and may get away with only one or two of the symptoms. Caffeine allergy symptoms in some rare cases may turn into a condition called Anaphylaxis. It is a life threatening allergic reaction and needs emergency attention. In this condition blood pressure can dangerously come down resulting in shock for the patient. Anaphylaxis can do great harm to the patient if not treated properly and at the right time.

From the above listed symptoms it becomes clear that caffeine allergy manifests itself in a majority of cases in the form of mental disorders and psychological problems. Hence the people who are experiencing caffeine allergy symptoms are very often wrongly treated as psychiatric patients. As a result, without knowing that they have caffeine allergy they keep on ingesting caffeine and this greatly deteriorates the functions of their brain and their symptoms aggravate instead of diminishing.