Replace the shower valve (faucet).
I would call a plumber to check it out. Because there may be another reason, it depends on other things besides faucet. Like a crimped water line under slab floor, if you have copper water lines, i have seen the cooper pipe go all the way into a tee and block off the outlet to the faucet. If it has been like i have mentioned above it would have been like this since day one. It would help if people would tell how old there house is and how long has the problem been going on. And yes it could be very much the faucet itself if it just starting do it.
IN ADDITION:
This also depends if the shower has a mixer or tap (faucet) installed, as the question didnt stipulate this. The rest of the house could have taps and the shower have a mixer. Mixers need a minimum pressure of 400 kpa from the hot water tank (geyser) to work. If the hot water tank is of a lower pressure this would explain for its poor performance.
The lack of water pressure in the shower could be due to a clog or blockage in the showerhead or pipes specifically connected to the shower. This can restrict the flow of water and result in lower pressure compared to other areas in the house.
To increase water pressure in your shower with a new shower head, choose a model specifically designed to boost pressure, such as a high-pressure or low-flow shower head. These types of shower heads can help increase the force of the water flow, resulting in higher water pressure during your shower.
You can increase water pressure in your shower by optimizing the shower heads. This can be done by cleaning the shower head to remove any mineral deposits that may be blocking the water flow, replacing the shower head with a high-pressure model, or installing a water pressure booster pump to increase the overall water pressure in your home.
To increase the water pressure of your shower head, you can try cleaning the shower head to remove any mineral deposits that may be blocking the flow of water. You can also check the water supply valves to ensure they are fully open. Additionally, consider installing a high-pressure shower head or a water pressure booster pump to improve the water pressure in your shower.
To increase water pressure in your shower head, you can try cleaning the shower head to remove any mineral deposits that may be blocking the flow of water. You can also check the water supply valves to ensure they are fully open. Additionally, installing a high-pressure shower head or a water pressure booster pump can help increase water pressure in your shower.
i found a great website for discount shower heads, but it also has a great support section with step by step pictures and instructions, including tips on increasing water pressure. htp://www.showerstore.com
More than likely a blockage, leak, or bad installation. If some other showers, toilets, and sinks are having problems with running water then it's likely a problem with the entire water system, usually bad parts or a leak.
To increase water pressure in your shower head, you can try cleaning the shower head to remove any mineral deposits, checking for any clogs in the pipes, adjusting the water pressure regulator, or installing a new shower head designed for higher pressure.
A high pressure filter shower head can improve water pressure by increasing the force of the water flow. It also filters out impurities and contaminants, providing cleaner water for a more refreshing and healthier shower experience.
A high water pressure shower head can provide a more invigorating and efficient shower experience compared to a standard shower head. It can help increase water flow, improve water pressure, and provide better coverage, leading to a more thorough and satisfying shower.
A water pressure regulator for a shower helps to control and stabilize the water pressure coming from the main water supply. It ensures that the water pressure remains at a consistent level, preventing sudden surges or drops in pressure. This helps in maintaining the optimal water pressure for a comfortable shower experience, as it ensures a steady flow of water at the desired pressure level, allowing for a more enjoyable and consistent showering experience.
To increase water pressure in your shower, you can try cleaning the showerhead, checking for any clogs in the pipes, adjusting the pressure regulator, or installing a water pressure booster pump.