Why is there a hard lump on my penis?

A hard pimple on the penis is most likely caused by allergies, or it may be caused by factors such as eczema or folliculitis. It is recommended that the patient seek help from a doctor to clarify the condition.

If the patient's clothing contains certain irritating ingredients, the patient may have an allergic reaction due to friction, causing symptoms such as pimples and itching. Patients can take loratadine tablets, cetirizine hydrochloride tablets and other drugs with the help of a doctor to help relieve symptoms.

It may be caused by poor hygiene of the patient's private parts and the penis being exposed to a humid environment for a long time. Patients usually experience symptoms such as itching and papules. Patients can apply compound dexamethasone acetate cream, hydrocortisone butyrate cream and other drugs as directed by the doctor to help with treatment.

If the patient's private parts are susceptible to bacterial invasion and infection, it may cause folliculitis, resulting in redness, swelling, pain, etc. Patients can use econazole nitrate cream, terbinafine hydrochloride cream and other drugs for treatment with the help of a doctor.

In addition, it may also be related to factors such as sebaceous cysts, genital warts, and epididymitis. If the patient feels unwell, it is recommended to seek medical treatment promptly to avoid delaying treatment.