Iran is subjecting the prize-winning rights activist Narges Mohammadi to torture by denying her proper healthcare in a reprisal for her campaigning, Amnesty International said on Wednesday. Mohammadi is held in the notorious Qarchak women’s prison southeast of Tehran, whose conditions have long alarmed rights campaigners. Her husband Taghi Rahmani, who is based in Paris, had on social media this week accused the prison authorities of deliberately withholding medication sent by her family to treat a lung condition. “Iran’s authorities are torturing human rights defender Narges Mohammadi in pris…