A physical medical care is always acceptable for the patient who has suffered allergic. A better and practical way is using silk bed sheets.
Since silk is made by silkworms, the material has a number of naturally occurring substances in it. Even when the cocoon is converted into silk, these substances are not completely lost. So, fungus, molds and dust mites do not attack silk duvets. That is why doctors advise people suffering from asthma or allergic reactions to use silk bedding.
Now you might buy silk bedding, why not buy a healthy one?