I'm no doctor and you really should consult one before you leap into one, but I was told for my case to avoid it. I have been in one twice and once I felt fine, another I felt suffocated. The extra added moisture caused my airways to basically seize and caused a brutal asthma attack. Depending upon your asthma both dry and wet heat can cause problems, however, I haven't any issue with really hot showers. I would simply consult a doctor first.