Planning treatment in Japan when you may leave the country
Key points for foreign residents who are considering treatment in Japan but may return home or relocate before completing follow-up care.
Why this matters for foreign residents
Most medical treatments in Japan require follow-up visits after the procedure — sometimes for several months or more. For foreign residents who may relocate or return to their home country, there is a risk that the follow-up schedule conflicts with their departure date. This applies especially to procedures with mandatory post-operative checks: ICL eye surgery, hair transplant surgery, orthodontic treatment, and ongoing AGA medication plans all have different follow-up requirements.
Timing treatment around your departure
Before booking, tell the clinic your likely departure date and ask whether the full treatment course — including all required follow-up visits — can be completed before you leave. For ICL eye surgery, follow-up visits are typically required the next day, at one week, one month, and then at intervals for at least a year. Hair transplant recovery requires multiple checks over six to eighteen months. Clear aligner treatment can take one to three years. Starting any of these treatments close to a planned departure introduces significant risk.
AGA medication and going abroad
AGA treatment using finasteride or dutasteride requires continuous use to maintain results. If you are leaving Japan for an extended period, ask the clinic whether they can prescribe medication in advance to cover your time abroad. Rules about the quantity that can be prescribed at once vary by clinic and by the type of medication. Also check the regulations of your destination country — finasteride and dutasteride are available in many countries but may require a local prescription. Stopping medication abruptly will cause hair loss to resume.
Documents to request before leaving Japan
Before your departure, ask the clinic for a medical summary in English (and Japanese if needed) that includes: the treatment performed and date, the implant or device type and serial number if applicable, medications prescribed and dosages, results of any key diagnostic tests, and future follow-up schedule and what to watch for. For ICL surgery, a record of the lens specifications and post-operative eye measurements is particularly useful for any future ophthalmologist. For hair transplant, a record of the number and location of grafts is helpful.
Emergency contacts and care abroad
Ask the clinic for a written emergency contact and what symptoms warrant urgent attention after each type of treatment. For ICL patients, sudden vision changes, severe pain, or worsening redness require immediate ophthalmology care regardless of location. For hair transplant patients, signs of infection at the donor or recipient site need medical attention. If you experience complications abroad, seek local medical care promptly and share your treatment records from Japan. Contact the original clinic in Japan if possible for guidance.