Can you tell me about suffering from claustrophobia?

It feels horrible: Depending on the nature and severity of your symptoms, you have several options which work best in combination. It you are not medicated or if your meds are not working, follow up on this.. You can be helped. The next and equally important step is to find a behavioral therapist. While CBT can help, systematic sensitization is another option. If trauma related, EMDR could also help.

Claustrophobia: According to studies around 6% of the world experience claustrophobia - that is a lot of people! Generally, if untreated the condition does not improve. I suggest you locate a mental health professional who has experience with this disorder. If you live near a large university or teaching hospital they may have anxiety clinics. Systematic Desensitization is the technique that seems to work well.