лечи́ться

uncommon #6507verbreflexiveimperfective

1.
to undergo treatment, to be treated, to undergo a curemedicine
Я тепе́рь лечу́сь у окули́ста.
I'm being treated by an eye doctor now.
Often with у + doctor (у врача) or от + illness.
2.
to be curable, to be treatable, to healmedicine
Э́та боле́знь легко́ ле́чится антибио́тиками.
This illness is easily cured with antibiotics.
Used of the illness itself, not the patient.

Examples

Глу́пость не ле́чится.
There's no cure for stupidity.
Она много лет лечится от полиартрита.
She has been receiving treatment for polyarthritis for many years.
Отравившийся грибами турист долго лечился.
The tourist who had been poisoned by mushrooms underwent treatment for a long time.
Это заболевание, выявляемое анализом крови, лечится успешно.
This disease, which can be detected by a blood test, is successfully treated.
Она поехала лечиться в горную здравницу.
She went to a mountain sanatorium for treatment.
Триппер лечится курсом антибиотиков.
Gonorrhoea is treated with a course of antibiotics.
После погружения он неделю лечился от декомпрессии.
After the dive, he spent a week being treated for decompression sickness.
Он лечится от цирроза уже два года.
He has been undergoing treatment for cirrhosis for two years.

Note: Stress change.

Imperative
ты	лечи́сь
вы	лечи́тесь

Active present	ле́чащийся	undergoing treatment, being treated, receiving medical care
Active past	лечи́вшийся	the one who was treated, having been treated
Passive present	-
Passive past	-
Gerund present	леча́сь	while doing (present)
Gerund past	лечившись	while doing (past)