Why can't something be medical AND psychological? Stress, bad diet, lack of social interaction, etc. Our bodies and minds are legacy material thanks to the technology we created. What I don't like about the medical profession is how they jump to definitive conclusions to many things and fail to question so-called established wisdom.

Symptoms are as real as the patient feels it. It's not over until they feel cured. Anybody who's struggled with something outside their power knows that strength of will can work miracles but only get you so far.