If your husband is frequently yelling, it might be linked to underlying health issues rather than just relationship problems. Conditions such as chronic stress, anxiety, depression, or even hormonal imbalances can affect mood and impulse control. Certain neurological disorders, like dementia or traumatic brain injuries, can also lead to sudden changes in behavior, including anger or aggression. If this behavior is new or worsening, it might be worth encouraging a medical check-up to explore possible health-related causes.