What symptoms might indicate a Liver Qi stagnation pattern?

The symptoms associated with a Liver Qi stagnation pattern are primarily related to the liver's role in managing the flow of Qi and emotional wellbeing. Irritability is a key indicator of emotional disturbance often linked to liver Qi stagnation, as the liver is responsible for regulating emotions. Sighing is another common symptom, as it can reflect a physical manifestation of the need to release built-up stress or tension, which is often the result of stagnant Qi. Menstrual irregularities, such as premenstrual syndrome (PMS), are also closely related to liver function because the liver's health directly influences the menstrual cycle by ensuring proper flow and balance of hormones.

In contrast, the other options describe symptoms that are associated with different patterns. Fatigue, pallor, and loss of appetite can indicate deficiency conditions rather than stagnation. Symptoms like diarrhea and a feeling of fullness, along with a pale complexion, may point towards issues related to spleen deficiency or dampness instead. Joint pain, swelling, and loss of movement are indicative of conditions like wind-dampness or other pathological processes affecting the joints, rather than liver Qi stagnation. Therefore, option B correctly identifies the symptoms that specifically align with the diagnosis of Liver Qi stagnation.