Eczema and joint pain are not related to sexual disinterest. However continuous insomnia and severity of joint pains may be connected due to interfering each other. This may, in some cases, cause lack of sexual enjoyment but it is not a rule. You should treat these separately in allopathy. However in Ayurveda vata humor vitiation theory fits insomnia, joint pains, impotency etc but not skin as a general rule. In my own patients cases I would treat them with mild purgation and Intestinal unctuousness, appetizers and nervine tonics like Ashwagandha herb and allied preparations. This would address joint pains, sexual lack and insomnia by combining food protocol and observing do s and dont s of diet. When nervine tonics added with dhatupaushtik i.e. semen thickeners, the foul smell will go. For the time being a lot water should be given along with gokshura and Kapikachhu herbal capsules of Himalaya co. If you agree, may write direct question for further guidance and treatment. Alternatively you may meet any Ayurveda specialist to look into the case for your husband s benefit. Hope it helps you.