(Chevraya citing R. Ba bar Zavda): (Concerning the definition of a dangerously ill person who may be healed even if it involves doing melacha on Shabbos) if the wound is from his lips and inward, one may heal it (even) on Shabbos.

Question (R. Zeira): But the Mishnah (in Maseches Shabbos) teaches that if a person has tooth pain, he may not gulp vinegar. But according to your definition, surely the teeth are more internal than the lips and it should be permitted?

Rather, R. Zeira quoted R. Ba bar Zavda differently, that any wound that is actually inside the body is permitted. (This does not include the mouth.)

(R. Zeira/ R. Ba bar Zutra/ R. Chaninah quoting Rebbi): When the skull has become weak and is causing headaches, it is permitted to tie it on Shabbos to strengthen it.

(R. Chiya bar Medayei/ R. Yona/ R. Zeira/ R. Ba bar Zutra/ R. Chaninah citing Rebbi): If a person's jaw became dislocated, he may tie it on Shabbos (as it can be dangerous).

(R. Abahu citing R. Yochanan): If a person's eye might come out of its socket, he may apply ointment on Shabbos.

They said in Bavel in the name of R. Yochanan that a wound on the back of the hand or the foot is dangerous and one may break Shabbos to heal it.

(R. Abahu citing R. Yochanan): Redness in the eye is dangerous and one may break Shabbos to heal it.

(R. Avin): One who was bitten by a scorpion on Shabbos may remove the sting.

(Rav): One who has eye pain on Shabbos may apply wine outside the eye but not inside (because outside looks like washing rather than healing).

(Shmuel): Spit (of a person who has not eaten since he woke up) may not be used to heal the eye on Shabbos. (Since it is disgusting, it is clear that he is doing it for healing rather than mere washing.) These laws of wine and spit also apply when a person has a scab on his eye.

(Rabbanan of Kisari): A 'frog' - a pus-filled wound under the tongue between the veins is dangerous (and Shabbos may be broken to heal it).

(R. Chizkiyah citing Rabbanan of Kisarin): A 'spider' wound is dangerous.

(R. Shmuel bar Rav Yitzchak): Gumrasa (a type of red boil) is dangerous.

(R. Yirmiyah): If a person contracted such a Gumrasa, he may even put chametz on it on Pesach.

If a bone became stuck in someone's throat, even if it is not dangerous, it may be removed on Shabbos (since the removal is not considered an act of healing).

(R. Yosi): There is a proof to this from the Mishnah in Maseches Shabbos - One may use a sewing needle to remove a thorn on Shabbos. (If one can remove a thorn, why would removing a bone be any different?)

Question (to R. Yirmiyah): If an eye's vision dimmed, is it permitted to heal it on Shabbos?

Answer (R. Yirmiyah): R. Ba is here - go and ask him the question. They asked R. Ba and he permitted it and R. Yirmiyah said that if so, he also permits it.

(R. Abahu citing R. Yochanan): Tzapduna (a disease of the teeth) is dangerous.

R. Yochanan had Tzapdana and he was treated by the daughter of Timtinus in Tiveria. R. Yochanan went to see her on Erev Shabbos towards evening. He asked her, "Do I need to continue to treat on Shabbos". She said, "No, but if you need to take something, use date pits".

Some say that she told him, "Use pits of Niklavsi dates (that are high quality) and burn half of them in fire and then add barley shells and dry excrement of a child and grind them all together and stick the mixture to the painful place; and do not reveal this medicine to anyone." The next day, he went to the Study Hall and taught it in public. She heard about it and choked herself to death. Some say that she converted.

You can learn three things from that story - that Tzapdana is dangerous; that anything that is internal from the lips may be healed on Shabbos; and that we follow the teaching of R. Yaakov bar Acha in the name of R. Yochanan, that if the doctor is an expert, it is permitted to go to him.