Can a person with AIDS masturbate?
Question

                Is it permissible for an HIV positive person to masturbate?.
Praise be to Allah.Firstly: 
A person who is a carrier 
    of the virus or who has AIDS may get married to a woman who is healthy or 
    who also has the disease, if she accepts that after coming to know of his 
    condition and to what extent he is affected, and they may agree not to have 
    children, or not to have intercourse. The husband may be masturbated by his 
    wife, and there is no sin on him for that. 
But it is not permissible 
    for him to get married without informing the woman of his sickness, because 
    concealing it is deceit and is haraam. If he conceals it then the wife finds 
    out, she has the right to annul the marriage. 
Secondly: 
Masturbation is haraam, as 
    has been explained in question no.
    329. 
But if the person who has 
    AIDS cannot get married, and he is afraid that he may fall into zina 
    (fornication), it is permissible for him to masturbate, so as to choose the 
    lesser of two evils. 
Shaykh al-Islam Ibn 
    Taymiyah (may Allaah have mercy on him) said: With regard to ejaculating by 
    choice, if he masturbates with his hand, this is haraam according to most of 
    the scholars, and it is one of the two reports narrated from Ahmad, in fact 
    it is the more correct of the two. According to another report it is 
    makrooh, but if he is compelled to do that, such as one who fears that he 
    may fall into zina if he does not masturbate, or he fears that he may become 
    ill, then in this case there are two well known scholarly views and in this 
    case a number of the earlier and later scholars granted a concession, 
    whereas others forbade it. And Allaah knows best. End quote from 
    al-Fataawa al-Kubra (1/302). 
It says in Sharh 
    al-Muntaha (3/366): Whoever masturbates with no need, man or woman, his 
    action is forbidden and he should be disciplined for that because it is a 
    sin. But if he does it for fear of committing zina or homosexuality, then 
    there is no punishment, and if he does it for fear of physical harm the same 
    applies, and more so. But it is not permissible for a man to masturbate with 
    his hand unless he is unable to get married, because if he is able to get 
    married there is no need for that. End quote.
And Allaah knows best.