If your husband is experienced excessive hair loss, he needs to see a hair specialist to evaluate his hair loss. Hair loss is triggered by stress, medication, exposure to chemicals, nutritional deficiency, skin disease or any other reason, it is a temporary situation, but sometimes it could be permanent.
Male pattern baldness is the most common of hair loss in men and it is permanent. Fortunately, medications and hair care products can be used to manage hair loss. Medicine such as Propecia, Rogaine are highly effective.