Agoraphobia is a fear of being in situations where escape might be difficult or that help wouldn't be available if things go wrong.
More information on Fear Of Open Spaces is available here.
Phaeochromocytoma is a rare (usually non-cancerous) tumour of the adrenal glands, which sit above the kidneys.
More information on Pheochromocytoma is available here.
Important: If you have these symptoms, they may be unrelated to any of these conditions listed. If you are concerned about your symptoms then you should see a doctor.