A communication barrier is any distortion or interruption during a conversation, resulting in miscommunication of the message. There are several types of communication barriers. Physiological barriers are limitations caused by a person's health condition or disability, such as hearing loss, poor eyesight, illness, or unconsciousness. Psychological barriers, such as a person's state of mind, can disrupt communication. Some psychological factors are anger, preoccupation with other thoughts, stress, and low self-esteem. Attitudinal barriers include any conflict between the sender and receiver that can impact effective communication. Likewise, a resistant person or a person with decreased motivation can block effective communication. Perceptual barriers occur when a person receives a message differently due to biases influenced by personal experiences or beliefs. Language barriers include any linguistic limitation that causes confusion or difficulty in understanding. For example, people speaking different languages and dialects or speech disorders, such as stuttering. Physical and environmental barriers, such as noise, poor lighting, or unhygienic rooms, can also disrupt conversations and affect communication.