They also likely understand you supposedly cannot ask them WHAT health concern.You can, of course, ask for the name of the  medical provider they have seen that has diagnosed this "health concern".If you don't wish to go this route you can explain to the tenant you have addressed this issue with professionals but if they wish to break their lease you will place the unit on the market and once it is re-rented they no longer owe rent. 

When I was diagnosed with stage 4 cancer, and spent months in the hospital (lost the ability to walk and had some organs removed), and wasn't expected to live, I made sure that my brother dropped off a rent check every month to my landlord.

I'm a doctor so these conversations come naturally to me, it's just that your diagnosing the home owners needs and wants rather than the patients health. 

My handyman can do a range of fixing and diagnoses problems that are beyond his skills. 

If this were a forum for maximizing profit in sales tactics where we can discuss the intricacies of getting paid for a diagnostic service call regardless of whether you actually diagnose anything correctly, well then...

They just informed me that their son has been diagnosed with autism and the doctor gave them a letter/prescription advising that he have a "comfort dog". 

Her Dr. diagnosed her with alzheimers a year prior to signing.

You can outsource marketing (any agent will list it), accounting (any CPA) but without relationship with Tenants you'll have constant problems.Such companies exist - they take phone calls 24/7 and then transfer them to PM to coordinate contractors.If you don't care about your bottom line, you can hire such a company: they will call to the most expensive plumber co, electric co, etc - you pay the money, they fix the problem.Fixing toilet would take you 10 min plus driving, they will call the plumbing company which takes $200 just to diagnose the issue (im not kidding - I've had such thing).

@Noah Pruett- you lifted my spirit with your answer no disrespect Aaron I believe right now my best choice is wholesale cause It does require as much regarding founds now wholesale risky yes it Might be if you don’t know what you doing at any given situation always research, diagnose, Execute results I will receive positive thinking and playing cards right I must do.

Every lot I have saved to show him is literally under contract with in days I unfortunately was diagnosed with Lyme Disease the Medical Costs outrageous.