I am deeply worried to hear that your illness has worsened. As we have a sword to kill an enemy and medicine to cure an illness, your illness can be cured through good medicine.

In ancient times King Ajātaśatru of India killed his father, and in doing so became an enemy of the Buddha. As a result, he suffered from rashes all over his body. However, he put faith in the Buddha and upheld the Lotus Sūtra and because of this his rash disappeared and his life span was extended by 40 years. The Lotus Sūtra preaches that it is the good medicine for the people in the Jambudvīpa (whole world). Everyone in the world suffers from illness, and the Lotus Sūtra is for them. Regarding your own illness, the three (Śākyamuni Buddha, the Lotus Sūtra, and Nichiren) will join hands to help you. How then can it not be cured? However, I cannot help if you don’t place your trust in me. Namu Myōhō Renge Kyō! Namu Myōhō Renge Kyō!

Takahashi Nyūdō-dono Gohenji, A Response to Lay Priest Lord Takahashi, Writings of Nichiren Shōnin, Volume 7, Followers II, Pages 80-81