Hydroxyzine Pamoate is primarily used to treat which of the following conditions?

Hydroxyzine Pamoate is primarily utilized for its efficacy in treating conditions such as anxiety and chronic urticaria. As an antihistamine, it is effective in managing anxiety by producing a calming effect, making it a suitable choice for these patients. Additionally, its ability to alleviate itching associated with chronic urticaria demonstrates its versatility in treating allergic reactions and related conditions.

In contrast, the other conditions listed are not treated with Hydroxyzine Pamoate. Osteoarthritis and rheumatoid arthritis fall under the category of inflammatory joint diseases, which typically require nonsteroidal anti-inflammatory drugs (NSAIDs) or other anti-rheumatic medications for management. Insulin-dependent diabetes is managed through insulin therapy, not antihistamines. Lastly, muscle spasticity is usually treated with muscle relaxants or medications explicitly designed for that purpose, rather than Hydroxyzine Pamoate. Thus, option A is the appropriate choice given its established uses in clinical practice.