Breathless when i go to take a shower?

Depends on duration : Have you had this all your life, or just recently? Is it associated with a different place to shower? Do you wheeze? Do you get dizzy? Do you get chest pain? Best to ask your doctor to check you out.

Asthma or CHF: Asthma or even congestive heart failure (CHF) may explain shortness of breath (sob) when showering. I will assume that there are no hives on your body when you shower because a rare disease involves cold or heat induced hives and anaphylaxis which could cause sob. I recommend you get a breathing test and maybe an ekg to check on your lungs and heart.