Sores or ulcersĪ painful blister or sore on your penis could be caused by herpes, which is an STI caused by the herpes simplex virus.Ī painless sore or ulcer on your penis could be caused by syphilis (another STI). They're caused by the human papilloma virus (HPV), which is a sexually transmitted infection (STI). Genital warts are small fleshy growths or bumps that can appear on the shaft, and sometimes head, of the penis or under the foreskin. Lichen planus is a non-infectious itchy rash of purple-red bumps that can affect many areas of the body, including the penis. The swelling should soon subside and will not cause any permanent problems. Lymph is a clear fluid that forms part of the body's immune system. It happens when the lymph channels in your penis are temporarily blocked. This is a hard swelling that suddenly appears on the shaft of the penis after sex or masturbation.
Fordyce spots are generally harmless and do not need treatment. They can also appear on the inside of the cheeks or on the lips, and are present in 80 to 95% of adults. Fordyce spots are sebaceous glands (tiny glands found near the surface of your skin) without hair follicles.
Fordyce spotsįordyce spots are small yellowish or white spots on the head or shaft of the penis. They do not cause symptoms and do not require treatment. They're not sexually transmitted or caused by bad hygiene. They usually go all the way around the penis head in 1 or 2 rows. These are small flesh-coloured lumps normally found on the head of the penis. If you're worried, see a GP or visit a local sexual health clinic. Since the overall cosmic stellar and BH mass buildup trace each other tightly over time, our scenario of bulge formation in massive galaxies is independent of any strong BH feedback and means that the mechanism coupling BH and bulge mass until the present is very indirect.īased on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555, the XMM-Newton telescope, an ESA science mission with instruments and contributions directly funded by ESA Member States and NASA, the European Southern Observatory under Large Program 175.A-0839, the Magellan Telescope which is operated by the Carnegie Observatories, and the Subaru Telescope, which is operated by the National Astronomical Observatory of Japan.Worried about a spot, lump or growth on your penis? Here are some possible causes. Merging, in addition to redistributing mass in the galaxy, will add both BH and stellar/bulge mass, but does not change the overall final M BH/M *,bulge ratio. Since all necessary stellar mass exists in galaxies at z = 1.4, no star formation or addition of external stellar material is required, but only a redistribution, e.g., induced by minor and major merging or through disk instabilities. However, (2) since we have evidence for substantial disk components, the bulges of massive galaxies (M *,total = 11.1 ± 0.3 or log M BH ~ 8.3 ± 0.2) must have grown over the last 9 Gyr predominantly by redistribution of the disk into the bulge mass. Our interpretation is (1) if our objects were purely bulge-dominated, the M BH-M *,bulge relation has not evolved since z ~ 1.4. We find within errors zero difference between the M BH-M *,total relation at z ~ 1.4 and the M BH-M *,bulge relation in the local universe. All objects have virial M BH estimates available from the COSMOS Magellan/IMACS and zCOSMOS surveys. For 10 AGNs at mean redshift z ~ 1.4 with both Hubble Space Telescope (HST)/ACS and HST/NICMOS imaging data, we are able to compute the total stellar mass M *,total, based on rest-frame UV-to-optical host galaxy colors which constrain mass-to-light ratios. We constrain the ratio of black hole (BH) mass to total stellar mass of type-1 active galactic nuclei (AGNs) in the COSMOS survey at 1 < z < 2.
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